contrapose

To place in contraposition.

We certainly do not want to take our simple categorical statements and contrapose them into cumbersome natural language.

To contrapose an argument one swaps the conclusion with any one of the premisses and negates each of the swapped statements.

To contrast with, or form an opposite to, something.

At such moments, King was contraposed against the more frightening threat, his symbolism making the radicalism of the other party all the more apparent.

In fact, whereas the term existence is contraposed to non-existence, the term factual or empirical is contraposed to essential;