/ Dictionary / Index I inarguable: Meaning and Definition of Find definitions for: in•ar•gu•a•ble Pronunciation: (in-är'gy-u-bul), [key] — adj. not arguable: Her conclusion is so obvious as to be inarguable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: inarguable (Thesaurus) inarch Inari Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language