/ Dictionary / Index I irremissible: Meaning and Definition of Find definitions for: ir•re•mis•si•ble Pronunciation: (ir"i-mis'u-bul), [key] — adj. not remissible; unpardonable, as a sin. unable to be remitted or postponed, as a duty. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. irremediable irremovable Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language