/ Dictionary / Index K knackered: Meaning and Definition of Find definitions for: knack•ered Pronunciation: (nak'urd), [key] — adj. Brit. Slang. exhausted; very tired: He is really knackered after work. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: knackered (Thesaurus) knacker knackery Related Content Daily Word Quiz: designate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language