contradiction
n//ˌkɑːntɹəˈdɪkʃən//motsägelse, självmotsägelse
(countable, uncountable) The act of contradicting.
(countable) A statement that contradicts itself, i.e., a statement that claims that the same thing is true and that it is false at the same time and in the same senses of the terms.
(logic, countable) A proposition that is false for all values of its propositional variables or Boolean atoms.