(logic) a statement that is necessarily true; the statement `he is brave or he is not brave' is a tautology'
useless repetition; to say that something is `adequate enough' is a tautology'
(logic) a statement that is necessarily true; the statement `he is brave or he is not brave' is a tautology'
useless repetition; to say that something is `adequate enough' is a tautology'