adj. 25B6; adjective
these suggestions are totally untrue : FALSE, untruthful, fabricated, made up, invented, concocted, trumped up; erroneous, wrong, incorrect, inaccurate; fallacious, unsound, unfounded, misguided.
he was untrue to his friends : UNFAITHFUL, disloyal, faithless, false, treacherous, traitorous, deceitful, deceiving, duplicitous, double-dealing, insincere, unreliable, undependable, inconstant; informal two-timing; poetic/literary perfidious.
correct, faithful.