Synonym & Antonym Finder

Words have several meanings, so synonyms are listed sense by sense with a short definition and examples.

How to use the Synonym & Antonym Finder

Type a word such as “happy”.
Read each meaning with its synonyms and similar words.
Antonyms (opposites) are shown at the top.

Questions

Where do the synonyms come from?

From Princeton WordNet 3.0, a large lexical database of English built by linguists.