contradict
US /ˌkɑːn.trəˈdɪkt/
UK /ˌkɑːn.trəˈdɪkt/

1.
widersprechen, dementieren
deny the truth of a statement, especially by asserting the opposite
:
•
The witness's testimony seemed to contradict the evidence.
Die Aussage des Zeugen schien die Beweise zu widersprechen.
•
His actions often contradict his words.
Seine Handlungen widersprechen oft seinen Worten.
2.
widersprechen, entgegnen
assert the opposite of a statement made by (someone)
:
•
He would often contradict his parents just for the sake of argument.
Er widersprach oft seinen Eltern, nur um zu streiten.
•
It's rude to contradict someone directly in a meeting.
Es ist unhöflich, jemanden direkt in einer Besprechung zu widersprechen.