Breadcrumb Home > Dictionary > Index P probative: Meaning and Definition of Find definitions for: pro•ba•tive Pronunciation: (prō'bu-tiv, prob'u-), [key] — adj. serving or designed for testing or trial. affording proof or evidence. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: probative (Thesaurus) probation officer probe ✖ Related Content Daily Word Quiz: dubitable Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language