Word Definition Lookup

How the Word Definition Lookup Works

This free online dictionary tool queries the Free Dictionary API in real time to retrieve comprehensive word data. When you type a word and click Lookup (or press Enter), the tool fetches definitions, phonetic transcriptions, pronunciation audio, part-of-speech groupings, example sentences, synonyms, and antonyms — all in one clean, ad-free interface. The API covers hundreds of thousands of English words sourced from Wiktionary and other open dictionaries, making it suitable for students, writers, ESL learners, and anyone building their vocabulary.

Every word result is organized by part of speech: noun, verb, adjective, adverb, and more. Within each part-of-speech group, you'll see all definitions with numbered entries, example sentences in italics, and clickable synonym chips. Clicking a synonym instantly triggers a new lookup for that word, letting you explore related vocabulary quickly. The pronunciation audio button (when available) plays the word spoken by a native speaker using your browser's built-in HTML5 audio — no plugins needed.

Word of the Day Feature

Every day the tool automatically selects a new interesting word from a curated list of 365 vocabulary-rich English words. Words like serendipity, petrichor, ephemeral, melancholy, and sonder rotate daily based on the day of the year. Click the "Word of the Day" button or the word itself to look it up instantly. This daily discovery feature is perfect for building vocabulary over time without any effort — just visit the page and learn a new word.

Search History and Privacy

Your last 10 looked-up words are saved as clickable chips below the search box, letting you revisit recent lookups with a single click. This history is stored entirely in your browser's localStorage — it never leaves your device, is never sent to any server, and is never logged anywhere. No account is required. No personal data is collected. You can look up as many words as you like, and your history exists only on your own device.

Tips for Getting the Most from This Dictionary

For best results, enter the base form of a word: use run instead of running, happy instead of happier. If a word isn't found, check your spelling — the tool will suggest common words from its built-in list. Use the synonym chips to explore related words and discover vocabulary you didn't know you were missing. The pronunciation audio is especially useful for ESL learners who want to hear the correct stress pattern. Last updated: March 2026, using the Free Dictionary API v2.