/ Dictionary / Index I insusceptible: Meaning and Definition of Find definitions for: in•sus•cep•ti•ble Pronunciation: (in"su-sep'tu-bul), [key] — adj. not susceptible; incapable of being influenced or affected (usually fol. by of or to): insusceptible of flattery; insusceptible to infection. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: insusceptible (Thesaurus) insurrectionize inswept 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