adultery
noun
[ əˈdʌlt(ə)ri ]
• voluntary sexual intercourse between a married person and a person who is not their spouse.
• "she was committing adultery with a much younger man"
Similar:
unfaithfulness,
infidelity,
falseness,
disloyalty,
unchastity,
cuckoldry,
extramarital sex,
extramarital relations,
affair,
liaison,
intrigue,
amour,
entanglement,
flirtation,
cheating,
two-timing,
fooling around,
playing around,
playing the field,
carryings-on,
hanky-panky,
a bit on the side,
fornication,
Origin:
late 15th century: from the obsolete noun adulter, from Latin adulter ‘adulterer’, replacing an earlier form avoutrie, from Old French avouterie .
