contradict

US /ˌkɑːn.trəˈdɪkt/
UK /ˌkɑːn.trəˈdɪkt/
"contradict" picture
1.

deny the truth of a statement, especially by asserting the opposite

:
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The witness's testimony seemed to contradict the evidence.
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His actions often contradict his words.
:
gainsaydenyrebutrefutedisprovecounteropposechallengedisputecontrovert
2.

assert the opposite of a statement made by (someone)

:
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He would often contradict his parents just for the sake of argument.
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It's rude to contradict someone directly in a meeting.
:
disputechallengeopposegainsaydeny
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contradiction