Synonyms of infidelity in English:

infidelity


See definition of infidelity

noun

1‘her husband never knew of her infidelity’

SYNONYMS

unfaithfulness, adultery, unchastity, cuckoldry, extramarital relations, extramarital sex

faithlessness, disloyalty, falseness, breach of trust, treachery, double-dealing, duplicity, deceit, perfidy, perfidiousness

affair, liaison, intrigue, amour

informal fooling around, playing around, playing the field, cheating, two-timing, hanky-panky, a bit on the side

formal fornication

ANTONYMS

fidelity, faithfulness