Last updated: 9 July 2026
Linguin is operated by Surfy Ltd, a company registered in England and Wales (company number 15026168), registered office at 14-2e Docklands Business Centre, 10-16 Tiller Road, London, E14 8PX, United Kingdom. These terms are the agreement between you and Surfy Ltd. By using Linguin you accept them.
Linguin is a multilingual dictionary and language learning service: word lookups, a personal dictionary, exercises, speaking practice, and translation. Parts of it are free, parts require a subscription, and the developer API is billed separately from a prepaid balance.
You sign in with your email address and a one-time code. Keep access to that mailbox secure, since anyone who controls it controls your account. You must be at least 13 to create an account. Younger children can use Linguin only through a family plan seat set up by their parent or guardian.
Paid plans renew automatically at the end of each billing period until you cancel. You can cancel anytime from your account, and the plan then stays active until the end of the period you have already paid for. Payments are processed by Stripe.
On a family plan, the owner manages the seats and is responsible for the members' use of the service, including consent for any members who are minors.
If you are a consumer in the UK or EU, you have a legal right to withdraw from a digital purchase within 14 days. By starting a paid plan immediately you agree that the service begins right away, and the withdrawal right applies as described at checkout. This does not limit any refund we choose to give or any right the law gives you. Refunds across the whole service are gathered in the Refund Policy.
API access is prepaid: you top up a balance and calls are billed against it at the rates on the API pricing page. The details live in the API Terms, which apply together with these terms whenever you use the API.
Dictionary entries, translations, and practice conversations are generated by AI. They are usually right and sometimes wrong. They describe how language is actually used, so entries can document slang, brand names, and cultural references without endorsing them. Nothing on Linguin is professional advice. If you find an entry that is wrong or harmful, tell us on the contacts page and we will review it.
Text you submit stays yours. You give us the permission needed to process it and show it back to you. When a lookup creates a new public dictionary entry, that entry belongs to Linguin and contains only the word and its description, nothing about you.
The dictionary, the site, and everything we made are ours. You are welcome to read, link, and quote reasonably with attribution. Copying the dictionary wholesale, republishing it, or scraping it in bulk is not allowed.
Do not disrupt the service, probe or access systems you are not meant to, circumvent billing or rate limits, or use Linguin for anything unlawful. We can suspend or close accounts that do.
Linguin is provided as is. We do not promise it will be uninterrupted or error-free, and we are not liable for losses caused by relying on generated content. Our total liability to you is limited to the amount you paid us in the twelve months before the claim. Nothing in these terms limits liability that cannot be limited by law, and if you are a consumer your statutory rights are unaffected.
You can stop using Linguin and delete your account at any time via the contacts page. We can suspend or terminate accounts that break these terms, and we will say why unless the law prevents it.
We may update these terms as the service evolves. The current version always lives on this page with its date. If a change matters, we will make it visible on the site before it takes effect. Using Linguin after that means you accept the new terms.
These terms are governed by the law of England and Wales, and disputes belong to its courts. If you are a consumer elsewhere, you keep the protections and courts your local law grants you.