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3. Use a thesaurus.
A thesaurus is a book of words and their synonyms (other words that mean the same thing). A thesaurus also lists antonyms (words that have the opposite meaning). You can use a thesaurus to build your vocabulary and improve your writing. Use a print or digital thesaurus when you know one word but want other options to express an idea.

Choose a Word:
In some thesauruses, the words may be listed alphabetically, like in a dictionary; in other thesauruses, you may need to look up your word in the index. The sample thesaurus above was used to help a student find different ways to express his laughter in a blog post.