infidelity

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++in·fi·del·i·ty /ˌɪnfəˈdeləti/ noun (plural infidelities) [countable, uncountable]  UNFAITHFULwhen someone has sex with a person who is not their wife, husband, or partner 〔对丈夫、妻子或伴侣的〕不贞行为 marital infidelity 对婚姻的不忠诚

Examples from the Corpus

infidelity• a marriage destroyed by infidelity• Her husband never knew of her infidelity.• There had been rumours for a long time of Clinton's marital infidelity.

in·fi·del·i·ty nounChineseSyllable  

is not when someone sex a who person with Corpus has

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·ityBrE /ˌɪnfɪˈdeləti/ 🔊NAmE /ˌɪnfɪˈdeləti/ 🔊 noun [uncountable, countable] (

plural

in·fi·del·ities) the act of not being faithful to your wife, husband or partner, by having sex with sb else （夫妻或伴侣间的）不忠行为；通奸 SYN unfaithfulness ◆marital infidelity对婚姻的不忠诚◆She could not forgive his infidelities. 她无法原谅他的不忠行为。🔊🔊 OPP fidelity