/ Dictionary / Index W whacked-out: Meaning and Definition of Find definitions for: whacked-out Pronunciation: (hwakt'out', wakt'-), [key] — adj. Slang. tired; exhausted; worn-out. wacky; crazy. stupefied or crazed by narcotic drugs or alcohol; stoned. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. whacked whacking Related Content Daily Word Quiz: ablution Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language