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Acknowledgement of names
Together with its subsidiaries and other affiliates, Radyushin Pty Ltd, an Australian proprietary limited company trading as Power Thesaurus (“Power Thesaurus”), makes available the “Site” (websites including, without limitation, powerthesaurus.org, thrs.us and all subdomains), “Software” (software, mobile applications, browser extensions, add-ons), and “Services” (including, without limitation, thesaurus suggestions and/or grammar corrections, plagiarism detection, and human proofreading services) to help people communicate more effectively. Access to and use of Power Thesaurus’s existing Site, Software and Services, as well as any future Sites, Software or Services provided by Power Thesaurus are governed by this Terms of Service and License Agreement (this “Agreement”).
This is the official terms and conditions of agreement ("Agreement") between You and Power Thesaurus.
In this Agreement, the term “Power Thesaurus, "we", "our" or any variations thereof appearing within this agreement includes websites including, without limitation, powerthesaurus.org, thrs.us and all subdomains, as well as any equivalent, mirror, substitute or back-up websites, as well as our services, including the Power Thesaurus, Power Thesaurus Free, Power Thesaurus Pro mobile apps, Power Thesaurus browser extensions and other thesaurus related services branded as "Power Thesaurus", features, graphics, publications, correspondence, newsletters and all else that may be deemed to belong to or originated by Power Thesaurus.
The words "user", "users", or "you" and all other words that may be considered to have a similar meaning, appearing within this Agreement means at any time an individual (or individuals) or any party (or parties) who "use" or "using" Power Thesaurus at any time by directly or indirectly, with or without the aid of a appliance, device or machine, doing or trying to access, interacting with the Power Thesaurus in any way, transmitting, extracting or exchanging data or communicating with Power Thesaurus, contributing of any type of content, information or other materials, or in any way using, obtaining benefits, interacting with any function, service or feature of Power Thesaurus, for any purpose altogether.
Acceptance
The terms and conditions regarding your use of Power Thesaurus constitute a legally binding agreement between you and Power Thesaurus.
By using Power Thesaurus, you acknowledge, understand and signify your agreement to these terms and conditions and our Privacy Statement. If you do not agree to any of these Terms and Conditions or the Privacy Statement, please do not use Power Thesaurus. This Agreement will stay in its full force and effect as long as you use Power Thesaurus and in the event of cancellation of your account or service provided, you will still be confined by your obligations under this Agreement and the Privacy Statement, including any compensation, warranties and limitations of liability.
These Power Thesaurus's Terms and Conditions, and any rights and licenses granted under these Terms and Conditions, may not be transferred, designated, ascribed or assigned by you, but may be transferred, designated, ascribed or assigned by Power Thesaurus without limitation or restriction.
Power Thesaurus retains sole rights to alter or revise these Terms and Conditions and policies from time to time without any notice given to you, and you agree to be bound by such amendments or changes. Nothing in this Agreement shall be deemed to confer any third-party rights or benefits. This is the entire and exclusive Agreement between you and us regarding use of Power Thesaurus. Power Thesaurus Website may contain links to third party websites that are not owned, related or controlled by Power Thesaurus.
Additionally, Power Thesaurus assumes no accountability or responsibility for content censoring and editing, privacy policies, or practices of any third-party websites. By using Power Thesaurus, you expressly relieve Power Thesaurus from any and all liabilities that may arise from your use of any third-party website.
Power Thesaurus is offered for use only to users 18 years of age or older as there are certain areas of Power Thesaurus that contain mature or adult content. By using or attempting to use Power Thesaurus, you certify that you comply with age requirements of Power Thesaurus. Please discontinue using Power Thesaurus immediately if you are not yet 18 years old or if you are a person barred from receiving services under the laws of the United States or other country's, state's or territory's applicable jurisdiction.
Who We Are
Power Thesaurus is operated by Radyushin Pty Ltd (Australia). The Service combines editorial review, usage-based relevance signals, and quality controls to deliver accurate, context-aware lexical results across the Site, Software, and Services (web, mobile apps, and browser extensions).
Licenses
You agree not to reproduce, duplicate, copy, sell, trade, resell or exploit Power Thesaurus's content for any commercial use, whether or not for financial or any other form of compensation, unless you have the prior written permission and authorization of Power Thesaurus.
Examples of prohibited commercial use Power Thesaurus include, but not limited to, any of the following actions without Power Thesaurus's prior written permission and authorization:
Use of Power Thesaurus for gaining of advertising or subscription revenue;
Sale of content targeted advertising on Power Thesaurus's website;
Sale of admittance or access to Power Thesaurus;
And any use of Power Thesaurus that Power Thesaurus unanimously finds to utilize Power Thesaurus's resources with the consequence of competing with or displacing the market for Power Thesaurus in any way.
You consent not to use Power Thesaurus in any manner that affects negatively on us, in a way that will adversely reflect on our goodwill, name, reputation or cause discomfort to us or discourage any person or enterprise from using, linking, advertising or becoming a supplier with Power Thesaurus.
Automated Access. Except for publicly documented search-engine indexing (no caching/archiving) and uses expressly permitted by written agreement or an approved API, you may not use bots, scrapers, or automated systems to access, query, or copy the Site, Software, or Services. We may revoke indexing allowances at any time.
Fair-Use Query Limits (non-API). Unless otherwise agreed in writing or permitted via an approved API, the following apply:
No more than 5,000 unique term lookups per 24 hours per account; and
No more than 30,000 unique term lookups per 30 days per account; and
No concurrent use on more than two devices per account (except Family subscriptions).
We may throttle, suspend, or terminate accounts that exceed these limits or circumvent technical controls.
You agree not to be involved in the transmission or distribution of any kind of unsolicited messages, such as, but not limited to, chain letters, junk e-mails or spam.
You agree not to be involved in the transmission, distribution or uploading of any materials or programs that may contain spiteful or vindictive code, such as, but not limited to, viruses, timebombs, cancelbots, worms, trojan horses and spyware.
Power Thesaurus reserves the sole right to cease, sever, discontinue or make unavailable, temporarily or permanently, any part, function, feature or aspect of Power Thesaurus at any time and without notice, and carries no liability for exercising this right.
You agree that your use of Power Thesaurus shall be at your sole risk. To the fullest extent permitted by law, Power Thesaurus, its officers, directors, employees and agents disclaim all warranties, express or implied, and are not responsible for any direct or indirect losses, personal injury or property damages, claims, liabilities or problems that may be incurred during your involvement with Power Thesaurus, submissions, or any other actions performed on Power Thesaurus. You agree that any cause of action arising of or related to the Power Thesaurus must commence within one year after the cause of action accrues, otherwise, such cause of action is permanently barred.
As a result of your use of Power Thesaurus you may communicate with, receive communications from, be re-directed to, interact with, deal with or participate in or use the services or obtain goods and services of or from, third parties such as our advertisers, sponsors, or promotional partners. All such interaction, correspondence, communication or participation in promotions including your use of URLs or hyperlinks referenced or included anywhere on Power Thesaurus or any other form of link, payment and delivery of related goods or services, and any other terms, conditions, warranties or representations associated with such dealings is exclusively between you and third parties. You agree that Power Thesaurus shall not be accountable, answerable, responsible or liable for any loss or damage of any sort incurred as the result of any such dealings or as the result of the presence of such advertisers on Power Thesaurus.
Content & Editorial Governance
Editorially Curated Entries. The core lexical content on Power Thesaurus (including synonyms, antonyms, related terms, definitions, usage notes, and examples) is professionally curated. Our editorial team reviews sources, applies internal style and quality standards, and performs ongoing audits to maintain accuracy, context, and consistency across meanings.
Learn how we select, review, organize, and improve language content in our Editorial Standards.
Community Feedback (not public submissions). Power Thesaurus does not accept public submissions of new entries. Users may provide feedback (e.g., report issues, suggest improvements), which may be considered by the editorial team at its sole discretion. Feedback is informational only and does not appear automatically; editorial review is required before any change is published.
Permitted Use of Content. All content is provided for your personal, informational, and non-commercial use through the normal operation of the website, apps, and extensions. Except as expressly permitted in these Terms (see Content Syndication) or via written permission, you may not copy, reproduce, distribute, display, transmit, sell, license, scrape, download, or otherwise exploit the content, whether for commercial or non-commercial purposes.
Accuracy & Evolving Language. While the editorial team applies rigorous review, language evolves and reasonable differences in judgment can occur. Content may contain inadvertent errors or omissions. Power Thesaurus strives for high quality but does not warrant that the content is error-free, complete, or suitable for every context. You are responsible for evaluating fitness for your specific use.
Content Standards & Removal. We may remove or restrict content or feedback that violates these Terms or our policies. Editorial content is produced by or under the supervision of Power Thesaurus; community feedback reflects the views of individual users and not necessarily those of Power Thesaurus.
Feedback License. If you submit feedback (e.g., issue reports, suggested improvements), you grant Power Thesaurus a worldwide, perpetual, irrevocable, royalty-free, sublicensable license to use, reproduce, modify, and create derivative works from that feedback for the purpose of operating, improving, and promoting the Services, without attribution or compensation, unless required by law. You represent and warrant you have the rights necessary to grant this license.
User Responsibility. You remain responsible for reviewing content for suitability in your specific context and for compliance with your policies and applicable law.
Technology-Assisted Features
The Services may use automated and AI-assisted systems to organize language content, improve relevance, and, for eligible PRO requests, generate additional synonyms or antonyms when existing coverage is limited. Generated candidates pass through layered automated checks for term quality, duplication, metadata, and semantic coherence. Results remain subject to the same editorial standards, subsequent audits, corrections, and reporting processes as other language content.
These safeguards reduce errors but cannot guarantee that every result is correct or appropriate in every context. You may use results consistent with these Terms and your plan, and you remain responsible for reviewing their accuracy, legality, and suitability before use.
You may not:
Misrepresent the source or level of review of a result;
Use automated systems to mass-extract or reproduce outputs;
Use outputs to build or train AI products or LLM models.
AI Training and Content Limitations
Prohibited Model Training. You may not use the Services or content to train, fine-tune, or evaluate machine-learning or AI systems without our prior written consent. Our editorially curated content and underlying datasets are proprietary and include dynamic quality signals; unauthorized use may produce inaccurate outcomes and violates these Terms.
Copyright or Intellectual Property Infringement
If you believe that any user publications, submissions or other content on Power Thesaurus infringes upon your copyrights or your intellectual property rights have been otherwise violated, please notify Power Thesaurus in writing with the following information, pursuant to the Digital Millennium Copyright Act:
an electronic or physical signature of the person authorized to act on behalf of the owner of the copyright or other intellectual property interest;
identification and description and location of the copyrighted work or other intellectual property, reasonably sufficient to locate the material, that you claim to have been infringed;
your contact information, such as an address, telephone number and e-mail address;
a statement by you that you have a good faith belief that the disputed use of the material is not authorized by the copyright owner, its agent or the law;
and a statement by you, made under penalty or perjury, that the above information in the notification is accurate and that you are the copyright or intellectual property owner or authorized to act on the copyright or intellectual property owner's behalf.
Please note that only Digital Millennium Copyright Act notices should go to our Copyright Agent by e-mail: team@powerthesaurus.org with "DMCA notice" subject, any other feedback, comments, requests for technical support, and other communications should be directed to Power Thesaurus customer service by email: team@powerthesaurus.org with "Customer Service" subject. You understand and agree that if you fail to comply with all of the requirements of Section 5(D) of Digital Millennium Copyright Act then your notice may not be valid and we may refuse to act upon it.
Content syndication
We authorize the syndication and republication of a reasonable amount (as reasonably determined by Power Thesaurus, typically not more than sixty (60) unique publications per publisher per rolling twelve (12) months) of the content, providing that some form of credit is given to respective owners when such content appears in written or electronic publications, community newsletters, or journals.
Credit, as mentioned above, should include at least the title of source and URL (for offline media) or do-follow link (for online media).
Online: attribution with a do-follow link to Power Thesaurus.
Print/Offline: full source name and site link: Power Thesaurus — www.powerthesaurus.org
Registration and security
By completing the account registration process for Power Thesaurus, you are agreeing to subscribe to the selected Services, subject to the terms and conditions of this Agreement. You agree to provide Power Thesaurus with accurate and complete registration information and to promptly notify Power Thesaurus in the event of any changes to any such information.
You shall be solely responsible for the security and proper use of all user IDs, passwords, social network logins or other security devices used in connection with Power Thesaurus, and shall take all reasonable steps to ensure that they are kept confidential and secure, are used properly and are not disclosed to or used by any other person or entity. You shall immediately inform Power Thesaurus if there is any reason to believe that a user ID, password or any other security device issued by Power Thesaurus has or is likely to become known to someone not authorized to use it, or is being or is likely to be used in an unauthorized way. Power Thesaurus reserves the right (at its sole discretion) to request that you change your password(s) in connection with the Services, and you shall promptly comply with any such request.
You are solely responsible for all activity in connection with access to the Site and/or Services through your account or using your password, and for the security of your computer systems, and in no event shall Power Thesaurus be liable for any loss or damages relating to such activity.
Fees, payment, and trial memberships
If you have registered to use certain Services and/or Software on a trial basis, then you may use such Services and Software only for non-commercial evaluation purposes during the applicable trial period.
Your access to or use of Power Thesaurus shall be contingent upon your payment of all applicable fees as described on the Site or Software at the time (“Fees”).
Upon registering for Services, you will be required to designate a valid payment method. You hereby authorize Power Thesaurus and / or its payment provider(s) to charge to your designated account all Fees relating to the Services you select, and you agree to pay all such Fees in accordance with the applicable payment method terms and conditions.
Power Thesaurus reserves the right to revise its Fees, including by increasing or adding new Fees, at any time on ten (10) days’ notice. Such notice may be sent to you by email to your most recently provided email address or posted on the Site or by any other manner chosen by Power Thesaurus in its commercially reasonable discretion. You will be deemed to have received any such notice that is posted on the Site on the day it was posted. Your use of the Services after the ten (10) day notice period constitutes your acceptance of the new or revised Fees. If you do not agree to the revised Fees, you may cancel your subscription by contacting us at pro@powerthesaurus.org.
Payments and subscriptions (iOS, IPadOS)
Subscriptions will be charged to your credit card through your iTunes account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. You will not be able to cancel the subscription once activated. Manage your subscriptions in Account Settings after purchase.
Payments and subscriptions (Google Android Play Store)
Billing for subscriptions will be processed through your chosen payment method linked to your Google Play account. Your subscription will undergo automatic renewal unless you choose to cancel prior to the termination of the current subscription period. Note that after activation, the cancellation of a subscription is not permissible. Oversight of your subscriptions and their management can be performed in your Google Play account settings.
Continuous membership
To ensure uninterrupted service, all subscriptions are renewed automatically. You hereby authorize Power Thesaurus and / or its payment provider(s) to charge subscription Fees for the renewal period to the payment method on file. All subscriptions are renewed at the subscription level(s) and Fees in effect at the time the then-current subscription term ends.
Free trial
Power Thesaurus may offer a one-time free trial PRO membership from time to time with regard to certain Software or Services (a “Trial”). By accessing or using Power Thesaurus PRO during the Trial period, you agree to the terms of any such Trial and further agree to any changes Power Thesaurus may make to such Trial. If you cancel the Services before the end of the trial period, all your rights to any remaining free trial period will be waived (unless you started your Trial via our iOS app, in which case your trial will continue until the end of the trial period), and you will not be eligible to participate in any further Trials, except as allowed by Power Thesaurus in its sole discretion.
Termination and refund policy
This Agreement shall continue until you cancel your subscription or until terminated by Power Thesaurus. You may cancel your subscription at any time. If you cancel after your subscription renewal date, you will not receive a refund for any amounts that have been charged. Your cancellation will be effective at the end of your then-current subscription period, subject to applicable law, and you may use the Services until your cancellation is effective (unless your access is suspended or terminated as set forth below).
Power Thesaurus may deny you access to all or any part of the Services or terminate your account with or without prior notice if you engage in any conduct or activities that Power Thesaurus determines, in its sole discretion, violate this Agreement or the rights of Power Thesaurus or any third party, or is otherwise inappropriate. Without limitation, Power Thesaurus may deny you access to the Services, or terminate this Agreement and your account, if your use of the Services exceeds the 30-day and 24-hour use limitations set forth under the section titled “Licenses”.
Upon termination of your account(s) for any reason, your right to use Power Thesaurus and any of its content will immediately cease and all content in your account(s) will be deleted. All provisions of this Agreement that by their nature should survive termination shall survive termination, including, without limitation, ownership provisions, warranty disclaimers, indemnity, limitations of liability and miscellaneous provisions.
Except as may be expressly set forth herein, all Fees paid or accrued in connection with any Services are non-refundable, and Power Thesaurus will not prorate any Fees paid for a subscription that is terminated before the end of its term.
Consent to receive emails
For users located outside of the European Economic Area (EEA):
Your registration to use the Site and/or Services constitutes your consent to receive email communications from Power Thesaurus, including messages regarding customer service issues and other matters. You may opt not to receive email correspondence, other than technical notifications and email regarding issues related to your account and your use of the Site and Services, at any time by following the link included in the email messages.
For users located in the European Economic Area (EEA):
We only send marketing communications to users located in the European Economic Area (EEA) with your prior consent, and you may withdraw your consent at any time by clicking the “unsubscribe” link found within Power Thesaurus emails and changing your contact preferences. Please note you will continue to receive transactional messages related to our Services, even if you unsubscribe from marketing emails.
Newsletters
You acknowledge that all newsletter(s) released and distributed by Power Thesaurus are a privilege and not a right. We reserve the right to remove, refuse, or ban a user from our newsletter(s) at any time without prior notice.
Your acknowledgement and full acceptance of Power Thesaurus's terms and conditions is given by subscribing and maintaining a subscription to any or all of our newsletters.
You acknowledge that, as with Power Thesaurus, the views, opinions, and documents, such as newsletter articles or the entire newsletter itself, given do not necessarily reflect the views and opinions of Power Thesaurus. Many items on this site are written by other parties.
You acknowledge that, as with Power Thesaurus, you will hold harmless this site from any losses (including attorney fees), damages, claims, liabilities, or problems that may occur during your involvement with this site, submissions made to this site, dealings with others on this site, or any other actions performed on this site that may result in loss.
You acknowledge that, despite a newsletter being a different form of electronic content than a website, mobile application or browser extension, all other terms and conditions stated within this page or other policies of Power Thesaurus apply to newsletters or other forms of content.
Indemnity
You shall indemnify, release and hold harmless Power Thesaurus and its parents, subsidiaries, affiliates, licensors and suppliers, and each of their respective officers, directors, employees and agents, from and against any loss, liability (including settlements, judgments, fines and penalties) and costs (including reasonable attorney fees, court costs and other litigation expenses) relating to any claim or demand made by any third party due to or arising out of your access to the Site, use of the Services or Software, violation of this Agreement, or infringement of any intellectual property or other right of any person or entity. If you are a California resident, you waive California Civil Code Section 1542, which says: “A general release does not extend to claims which the creditor does not know or suspect to exist in his favor at the time of executing the release, which if known by him must have materially affected his settlement with the debtor.” If you are a resident of another jurisdiction, you waive any comparable statute or doctrine.
Warranty disclaimers
To the maximum extent permitted by applicable law, Power Thesaurus, its licensors and its suppliers expressly disclaim any and all warranties and conditions, express or implied, regarding the site, services, and software, including, but not limited to, any implied warranties or conditions of merchantability, merchantable quality, fitness for a particular purpose, title, noninfringement, satisfactory quality or arising from a course of dealing, law, usage, or trade practice, or regarding security, quiet enjoyment, reliability, timeliness and performance. You agree that your use of Power Thesaurus is at your own sole risk and that Power Thesaurus is provided on an “as is,” “where is,” “as available,” “with all faults” basis, without warranties of any kind, either express or implied. Without limiting the foregoing, Power Thesaurus and its licensors and its suppliers do not warrant that the operation of Power Thesaurus will meet your requirements or will be uninterrupted or error-free.
Limitation of liability
In no event shall Power Thesaurus be liable with respect to the site, services and/or software for (i) any amount in the aggregate in excess of the fees you have actually paid to Power Thesaurus during the twelve (12) month period immediately preceding the event(s) giving rise to such liability; (ii) any lost profits, lost or damaged user content or other data, or failure to meet any duty, including without limitation good faith and reasonable care; or (iii) any indirect, incidental, punitive, special, exemplary or consequential damages of any kind whatsoever.
You agree that this limitation of liability represents a reasonable allocation of risk and is a fundamental element of the basis of the bargain between Power Thesaurus and You. You understand that the site, services and software would not be provided without such limitations.
Certain states do not allow the limitation of certain damages, so some or all of this limitation of liability may not apply to you and you may have additional rights.
If you are a user from New Jersey, the foregoing sections titled “warranty disclaimers” and “limitation of liability” are intended to be only as broad as is permitted under the laws of the state of new jersey. If any portion of these sections is held to be invalid under the laws of the state of new jersey, the invalidity of such portion shall not affect the validity of the remaining portions of the applicable sections.
Violations
Please report any violations of the Terms and Conditions to our customer service by email to team@powerthesaurus.org with "Terms Violations" subject.