Probative Definition

prōbə-tĭv
adjective
Serving to test or try.
Webster's New World
Providing proof or evidence.
Webster's New World
Tending to persuade one or to prove that a certain proposition or allegation is true. Relevant evidence may be excluded by a court if its probative value is outweighed by the threat of prejudicing a matter unfairly.
Webster's New World Law

Tending to prove a particular proposition or to persuade someone of the truth of an allegation.

Wiktionary
Synonyms: