THESAURUS
unloyal
derelict, disaffected, disloyal, disregardful, faithless, false, fickle, inattentive, inconstant, inobservant, negligent, nonadherent, noncompliant, nonconforming, nonobservant, not true to, of bad faith, perfidious, recreant, traitorous, treacherous, trothless, uncompliant, unconforming, unfaithful, unobservant, unsteadfast, untrue
