Law and in legal contexts. transitive. To assert (something), esp. in order to refute an allegation, contradict a claim, etc. Frequently with that-cla…

intransitive. To be unfavourable to; to militate or tell against. Cf. sense 55b.

transferred. Of a statement, action, etc.: To be contrary to in effect, character, etc.; to be directly opposed to; to go counter to, go against.

to give the lie (to): to accuse (a person) to his face of lying. Also transferred of facts, actions, etc.: to prove the falsity of, to contradict…

transitive. To accuse (a person) of lying.

transitive. To show to be false, prove false or mistaken; to fail to fulfil (expectations, etc.).

intransitive. Of a thing: to conflict, be inconsistent with. Also, of speech, an action: to be directed against; to contradict. Obsolete.

Of things, actions, etc.: To run counter to, be contrary to, come in conflict with.

transitive. To show that (a statement, hypothesis, etc.) is not or may not be true; to disprove, invalidate. Also: to state that (a rumour, report…

transitive. To give indications contrary to; said esp. of symptoms in a disease which make against the usual treatment, or a particular remedy.