/ Dictionary / Index R remiss: Meaning and Definition of Find definitions for: re•miss Pronunciation: (ri-mis'), [key] — adj. negligent, careless, or slow in performing one's duty, business, etc.: He's terribly remiss in his work. characterized by negligence or carelessness. lacking force or energy; languid; sluggish. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: remiss (Thesaurus) remise remissible Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language