Synonyms and antonyms of Disloyal in British Thesaurus

disloyal (adjective)

not loyal to someone who you have a close relationship with or to an organization that you belong to

treacherous (adjective)

someone who is treacherous pretends that they support you but secretly tries to harm you, for example by helping an enemy

disaffected (adjective)

a disaffected member of a group or organization no longer feels any loyalty towards it

untrustworthy (adjective)

not capable of being trusted or depended on

faithless (adjective)

mainly literary not loyal or honest

inconstant (adjective)

formal someone who is inconstant is not loyal and cannot be trusted, especially in a personal relationship

traitorous (adjective)

literary behaving in a way that is not loyal to your country, family, friends, or employer

perfidious (adjective)

literary not able to be trusted

untrue (adjective)

old-fashioned not loyal, especially to your husband or wife

unfaithful (adjective)

literary not loyal