/ Dictionary / Index I inextinguishable: Meaning and Definition of Find definitions for: in•ex•tin•guish•a•ble Pronunciation: (in"ik-sting'gwi-shu-bul), [key] — adj. not extinguishable: an inextinguishable fire. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: inextinguishable (Thesaurus) in extenso* inextirpable Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language