infidelity

infidelity
(pl. -ies)
[mass noun]
  1. the action or state of being unfaithful to a spouse or other sexual partner
    (对配偶或性伙伴的)不忠行为;不忠
    her infidelity continued after her marriage.
    她婚后仍有不忠行为。
    [count noun]I ought not to have tolerated his infidelities.
    我当初不应容忍他的不忠行为。
  2. disbelief in a particular religion, especially Christianity
    不信奉宗教(尤指基督教)
语源
  1. late Middle English (in the senses 'lack of faith' and 'disloyalty'): from Old French infidelite or Latin infidelitas, from infidelis 'not faithful' (see infidel)
英语宝典
考试词汇表