/ Dictionary / Index F fatuitous: Meaning and Definition of Find definitions for: fa•tu•i•tous Pronunciation: (fu-t'i-tus, -ty'-), [key] — adj. complacently stupid; foolish. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fatty tumor fatuity Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language