untrue

Universal Words adjective 1 not true; not based on facts: These accusations are totally untrue. * an untrue claim / statement * It would be untrue to say that something like this could never happen again. 2 ~ (to sb/sth) (literary) not loyal to sb/sth SYNUNFAITHFUL: If he agreed to their demands, he would have to be untrue to his own principles. OPPTRUE