treacherously Synonyms

treasonably false traitorously faithlessly falseheartedly basely unfaithfully dishonorably deviously unreliably perilously roguishly shiftily unpatriotically unsafely unscrupulously untrustworthily dangerously unstably corruptly crookedly deceitfully deceptively dishonestly disloyally falsely fraudulently insincerely malevolently perfidiously traitorly underhandedly maliciously hazardously seditiously