Serving to disprove or show something is false; having the quality of refuting or contradicting a claim.
From dis- (prefix meaning 'opposite') + probative (from Latin probare, 'to prove'). The negative prefix transforms probative (tending to prove) into its opposite, meaning tending to disprove.
This word captures a key moment in scientific thinking—when evidence actively works against a hypothesis rather than just failing to support it. The distinction matters enormously in courts and laboratories, where disproofs are just as important as proofs.
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