/ Dictionary / Index W wacked-out: Meaning and Definition of Find definitions for: wacked-out Pronunciation: (wakt'out'), [key] — adj. Slang. whacked-out. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. wacke wacko Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language