List of unloyal synonyms and unloyal related words.
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