/ Dictionary / Index S stupefaction: Meaning and Definition of Find definitions for: stu•pe•fac•tion Pronunciation: (st"pu-fak'shun, sty"-), [key] — n. the state of being stupefied; stupor. overwhelming amazement. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: stupefaction (Thesaurus) stupefacient stupefactive Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language