contradict
verb (used with object)
to assert the contrary or opposite of; deny directly and categorically.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
If so, all the better for me this last week, when the mater has been spinning stories of my obstinacy, and pig-headedness, and general contradictiveness.
From The Independence of Claire by Mrs. George de Horne Vaizey