The tools /Thesaurus menu selection gives you possible meanings and synonyms for selected words in your documents. This helps you be more precise in your writing. To use the Thesaurus, position the cursor in front of a word or highlight it. And Right Click and Then you will find a dropdown menu and select synonyms option select Thesaurus menu as shown below.
Lists of possible meanings and synonyms are displayed. Pick a desired word so that it is in the Replace with Synonym box and click the Replace button to use it. Use the Look Up button to find alternate meanings of a selected word in the Meanings box. Click Cancel to exit the Thesaurus dialog box without accepting any of the suggested changes.