Synonym Finder

Find better words.

Synonyms, antonyms, and related senses for any English word – grouped by part of speech and meaning.

The Synonym Finder draws from WordNet, the lexical database built at Princeton, so every word you look up comes back grouped the way lexicographers actually organise meaning: by part of speech first, then by sense. A word like light is a noun, a verb, an adjective, and an adverb all at once, and each of those carries multiple distinct senses that no single thesaurus list can capture without flattening the picture.

Each sense shows its own synonyms, plus more specific verbs you could substitute, broader categories the word belongs to, and the closest similar adjectives where those apply. Antonyms are collected across all senses of the word at the bottom, and a row of derivationally related forms lets you walk from a noun to its verb or adjective. Click any word to copy it, or use the small arrow icon to look it up directly.

Frequently Asked Questions

Is the Synonym Finder free to use? +

Yes, completely free. No account, no signup, and no limits on how many words you look up.

What is the source of the synonym data? +

Results come from WordNet 3.0, the lexical database built at Princeton University. It covers 146,973 English headwords grouped by meaning and part of speech.

Why are results grouped by sense instead of listed alphabetically? +

Many words have multiple distinct meanings, and a synonym that works for one sense is wrong for another. Grouping by sense lets you find the right synonym for the exact meaning you need.

What do 'Broader' and 'More specific' mean in the results? +

Broader terms are hypernyms – more general words that your word is a type of (e.g. "vehicle" is broader than "car"). More specific terms are hyponyms – specific kinds of the word (e.g. "sedan" is more specific than "car").

Does it show antonyms? +

Yes. When WordNet includes antonyms for a word, they appear in a separate block below the synonym senses, collected across all senses and deduplicated.

Can I link directly to a specific word lookup? +

Yes. The URL updates with ?word= and ?pos= parameters as you search, so you can bookmark or share any lookup directly.