Synonyms for disloyalty

infidelity, inconstancy, treachery, unfaithfulness, recreancy, apostasy, betrayal of trust, faithlessness, disaffection, subversion, sedition, treason, deliberate breaking of faith, breach of trust, subversive activity, undutifulness, falseness, lack of fidelity, lack of loyalty, double-dealing, wishing harm to one's country, perfidy, Iscariotism, bad faith, dereliction of allegiance, violation of allegiance; see also dishonesty, treason.