infidelity
in‧fi‧del‧i‧ty /ˌɪnfəˈdeləti, ˌɪnfɪˈdeləti/
noun (plural infidelities) [uncountable and countable]
when someone has sex with a person who is not their wife, husband, or partner:
marital infidelity
in‧fi‧del‧i‧ty /ˌɪnfəˈdeləti, ˌɪnfɪˈdeləti/
noun (plural infidelities) [uncountable and countable]when someone has sex with a person who is not their wife, husband, or partner: