"His contradiction of the proposal was very interesting."
2.nounA statement that contradicts itself, i.e., a statement that makes a claim that the same thing is true and that it is false at the same time and in the same senses of the terms.
"There is a contradiction in Clarence Page's statement that a woman should have the right to choose and decide for herself whether to have an abortion, and at the same time she should not have that right."
3.nounA logical inconsistency among two or more elements or propositions.
"Marx believed that the contradictions of capitalism would lead to socialism."
4.nounA proposition that is false for all values of its variables.