/ Dictionary / Index C customable: Meaning and Definition of Find definitions for: cus•tom•a•ble Pronunciation: (kus'tu-mu-bul), [key] — adj. subject to customs or duties; dutiable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. custom customary Related Content Daily Word Quiz: topography Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language