/ Dictionary / Index S stupidity: Meaning and Definition of Find definitions for: stu•pid•i•ty Pronunciation: (st-pid'i-tē, sty-), [key] — pl. -ties the state, quality, or fact of being stupid. a stupid act, notion, speech, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: stupidity (Thesaurus) stupid stupor Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language