/ Dictionary / Index T thinkable: Meaning and Definition of Find definitions for: think•a•ble Pronunciation: (thing'ku-bul), [key] — adj. capable of being thought; conceivable. that may be considered as possible or likely. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thinkable (Thesaurus) think thinker Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language