To find another word for a given word, you can use a thesaurus. A thesaurus is a reference book or online tool that lists words grouped together according to similarity of meaning. Some popular online thesauruses include Thesaurus.com and WordHippo Thesaurus. To use a thesaurus, simply enter the word you want to find synonyms for and browse the list of related words. You can also search for antonyms, which are words with opposite meanings.