Synonyms of adultery in English:

adultery


See definition of adultery

noun

1‘she divorced me because of my adultery’

SYNONYMS
unfaithfulness, infidelity, falseness, disloyalty, unchastity, cuckoldry, extramarital sex, extramarital relations
affair, liaison, intrigue, amour, entanglement, flirtation
informal cheating, two-timing, fooling around, playing around, playing the field, carryings-on, hanky-panky
British informal a bit on the side
formal fornication
ANTONYMS

faithfulness, fidelity