/ Dictionary / Index I inexcusable: Meaning and Definition of Find definitions for: in•ex•cus•a•ble Pronunciation: (in"ik-sky'zu-bul), [key] — adj. incapable of being excused or justified. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: inexcusable (Thesaurus) inexactitude inexertion Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language