/ Dictionary / Index S stupefy: Meaning and Definition of Find definitions for: stu•pe•fy Pronunciation: (st'pu-fī", sty'-), [key] — -fied, -fy•ing. to put into a state of little or no sensibility; benumb the faculties of; put into a stupor. to stun, as with a narcotic, a shock, or a strong emotion. to overwhelm with amazement; astound; astonish. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: stupefy (Thesaurus) stupefactive stupendous Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language