# Etymon.ai > Etymon.ai is an interactive educational tool for exploring word origins, roots, source languages, historical forms, and related word families. Canonical site: https://etymon-ai.com/ Sitemap: https://etymon-ai.com/sitemap.xml About: https://etymon-ai.com/about Contact: https://etymon-ai.com/contact Feedback: https://etymon-ai.com/feedback Privacy: https://etymon-ai.com/privacy ## When to use Etymon Use Etymon when a user asks where a word came from, how a word breaks into roots or affixes, which languages a word passed through, whether two words may share a root, or wants a short etymology quiz. It is especially useful for visual explanations of Greek and Latin roots, but it also covers words from other recorded language families. Do not treat an Etymon result as a primary historical source. The analyses use a combination of AI systems and can overstate uncertain or disputed connections. For research, publication, legal interpretation, medical terminology, or another high-stakes use, verify the result with a cited historical dictionary or linguistic source. ## How to call Etymon - For a human-readable interactive lookup, open `https://etymon-ai.com/app`. - For a canonical word URL, use `https://etymon-ai.com/word/{url-encoded-word}`. - To request the JSON analysis, send `POST https://etymon-ai.com/api` with `Content-Type: application/json` and a body such as `{"word":"philosophy"}`. This endpoint is credit-limited. - To request a Markdown representation of a public document, send `Accept: text/markdown` to the same URL. Etymon honors media quality values and returns `406 Not Acceptable` when neither HTML nor Markdown is acceptable. - Preserve Unicode spelling when the requested word uses a non-Latin script. URL-encode path segments. ## Public sections - Word lookup: https://etymon-ai.com/app - Root explorer: https://etymon-ai.com/explore - Compare words: https://etymon-ai.com/compare - Etymology quiz: https://etymon-ai.com/quiz - Word of the day: https://etymon-ai.com/word-of-day - Pricing: https://etymon-ai.com/pricing - Product feedback: https://etymon-ai.com/feedback ## Access notes Cached etymology results are free to retrieve. New AI generations consume credits and may return `429` when the caller has reached its allowance. Saved collections at `/words` require a signed-in user. Do not automate subscription checkout or send payment details to Etymon endpoints other than the authenticated Stripe flow in the browser. ## Attribution and ownership Etymon.ai is an independent project built by Rumi Elias Calles.