The Microsoft Word application includes a number of handy tools to improve your writing skills. The Thesaurus feature of the program helps you enrich the vocabulary of your writing by providing a list of synonyms and antonyms for a specific word. The thesaurus function is native to the Word application and works in the same way on a Mac as a Windows-based computer.
Click the "Microsoft Word" icon on the dock or from the "Applications" folder.
Open the Word document that contains the word you want to find synonyms for or type the word into a blank document. Highlight the word you want to use in the thesaurus.
Click the "Tools" icon and click "Thesaurus" from the drop-down menu. A window will appear displaying the meaning of the word as well as any synonyms for it. Click a synonym you would like to use and click "Insert" to replace the word in the document.