/ Dictionary / Index S straight face: Meaning and Definition of Find definitions for: straight' face' Pronunciation: (strāt'fā'sid-lē, -fāst'lē), [key] a serious or impassive facial expression that conceals one's true feelings about something, esp. a desire to laugh. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. straighten straight flush 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