To establish as true; to make certain; to demonstrate the truth of by evidence or argument. transitive. With simple object.

In passive: To be proved true or correct by the result or event, or by some confirming fact or circumstance; to be fulfilled or accomplished in…

To make good (a statement or position); to show to be true, prove, demonstrate. with complement. Obsolete.

intransitive. To prove or turn out to be. Cf. approve, v.1 4c. rare.

intransitive. To withstand examination, stand up to scrutiny; (hence) to be acceptable. Obsolete.

intransitive. With complement. To appear or present itself or oneself in a specified character; to be found to be. Cf. to turn out 9c at phrasal…

intransitive. To be ultimately found or known to be, to prove to be (without implication of becoming). Usually followed by infinitive; also with…

figurative (colloquial) To bear trial or investigation, stand the test, find acceptance, prove to be genuine, reliable. Chiefly in (it) won't wash.