untrue

Synonyms: apocryphal cheating counterfactual deceitful deceptive delusive deviant disloyal dissembling distorted erroneous faithless fallacious false fictitious forsworn hollow imprecise inaccurate inconstant incorrect inexact lying meretricious misleading mistaken off out of line perfidious perjured prevaricating recreant sham specious spurious traitorous treacherous two-faced unfaithful unloyal unsound untrustworthy untruthful wide wrong

Antonyms: faithful honest true