INFIDELITY


Meaning of INFIDELITY in English

in ‧ fi ‧ del ‧ i ‧ ty /ˌɪnfəˈdeləti, ˌɪnfɪˈdeləti/ BrE AmE noun ( plural infidelities ) [uncountable and countable]

when someone has sex with a person who is not their wife, husband, or partner:

marital infidelity

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.