/ Dictionary / Index G goof-up: Meaning and Definition of Find definitions for: goof-up Pronunciation: (gf'up"), [key] — n. Slang. a person who habitually makes mistakes, spoils things, gets into trouble, etc., esp. through carelessness or irresponsibility. a mistake, blunder, malfunction, or the like. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. goof-off goofy Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language