treacherously Synonyms

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