Definition of Gratuitous: Gratuitous (adjective): Unnecessary or uncalled for; given freely without any reason or cause, often in a way that is unwarranted or excessive. Synonyms: unwarranted, unnecessary, uncalled for, excessive Antonyms: necessary, justified, warranted, essential Memory Tip: Think of “gratuitous” as something extra that’s not needed, like a comment that’s over the top or…