contradiction

noun

1. 1

   The act of contradicting.

   “His contradiction of the proposal was very interesting.”

2. 2

   A 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. 3

   A logical inconsistency among two or more elements or propositions.

   “Marx believed that the contradictions of capitalism would lead to socialism.”

4. 4

   A proposition that is false for all values of its variables.