Free Vocabulary Tool
Thesaurus
Find synonyms and antonyms for any English word in an instant - with example sentences to help you pick exactly the right one.
Frequently asked questions
Is the thesaurus free?
Yes. The MyProGrammar thesaurus is completely free to use with no sign-up. Type any word to see its synonyms and antonyms instantly.
What is the difference between a synonym and an antonym?
A synonym is a word with a similar meaning (happy / joyful), while an antonym is a word with the opposite meaning (happy / sad). This tool shows both for the word you look up.
Why do some words show only synonyms or only antonyms?
Our thesaurus draws on a hand-curated library. Some words have well-established synonyms but no clear single-word opposite, and vice versa, so you will only see the lists that genuinely apply.
How is a thesaurus useful for writing?
A thesaurus helps you avoid repeating the same word, find a more precise term, and vary your vocabulary so your writing sounds richer and more natural.