Synonyms of unfaithful in English:

unfaithful


See US English definition of unfaithful

See UK English definition of unfaithful

See Spanish definition of infiel

adjective

1‘she found out that her husband had been unfaithful’

SYNONYMS
adulterous, faithless, fickle, untrue, inconstant, flighty
informal cheating, two-timing
ANTONYMS

faithful

2‘you have proved to be an unfaithful member of this community’

SYNONYMS
disloyal, treacherous, traitorous, untrustworthy, unreliable, undependable, false, false-hearted, faithless, perfidious, insincere, two-faced, Janus-faced, back-stabbing, double-crossing, double-dealing, deceitful
archaic recreant
ANTONYMS

loyal