/ Thesaurus / F Synonyms of fatuousness Find synonyms for: Noun1. absurdity, fatuity, fatuousness, silliness, folly, foolishness, unwisenessusage: a ludicrous folly; "the crowd laughed at the absurdity of the clown's behavior"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: crockery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language