contradict
[ˌkɒntrəˈdɪkt]
vb
to affirm the opposite of (a proposition, statement, etc)
to declare (a proposition, statement, etc) to be false or incorrect; deny
to be argumentative or contrary
to be inconsistent with (a proposition, theory, etc)
the facts contradicted his theory
(of two or more facts, principles, etc) to be at variance; be in contradiction
柯林斯
百科