Word · Frequency #20013
infidelity
（在婚姻或恋爱中的）不忠；出轨
核心释义
Unfaithfulness in a marriage or intimate relationship, especially having a sexual or romantic affair with someone other than one's partner.
- 1.
在婚姻或亲密关系中的不忠:未经配偶同意与他人发生性关系或爱情关系的行为或事例。
Unfaithfulness in a marriage or an intimate (sexual or romantic) relationship: practice or instance of having a sexual or romantic affair with someone other than one's spouse, without the consent of the spouse.
- 2.
不忠诚的特质
the quality of being unfaithful
- 3.
其他道德义务方面的不忠。
Unfaithfulness in some other moral obligation.
不忠诚；背信；在婚姻或亲密关系中的不忠:未经配偶同意与他人发生性关系或爱情关系的行为或事例。；不忠诚的特质；其他道德义务方面的不忠。；不信神
用法In use
She discovered her husband's infidelity after finding a receipt for a hotel room.
用法提示：名词infidelity表示婚外不忠行为，句中与her husband's连用，作宾语。
Infidelity among close friends can destroy a lifelong bond of trust.
用法提示：名词infidelity在此指朋友间的背信弃义，用作主语。
The company's infidelity to its core values led to a public scandal.
用法提示：名词infidelity与to连用，表示对原则或承诺的背弃，作主语。
commit infidelity
She accused her husband of committing infidelity.
她指责丈夫不忠。
infidelity in [relationship]
常用搭配：in a marriage / relationship
相关词与表达Connections
搭配Collocations
- marital infidelity
- 婚姻不忠；婚内出轨
- The movie explores the consequences of marital infidelity.这部电影探讨了婚内出轨的后果。
- sexual infidelity
- 性不忠；肉体出轨
- They agreed that sexual infidelity would end their marriage.他们一致认为肉体出轨会结束他们的婚姻。
- emotional infidelity
- 精神出轨；情感不忠
- He considered his wife's texting an old friend to be emotional infidelity.他认为妻子与老朋友发短信属于精神出轨。
- an act of infidelity
- 不忠行为；一次出轨
- Forgiveness is difficult after an act of infidelity.发生一次不忠行为之后，原谅是很难的。
- suspect infidelity
学习提示Learner notes
记忆技巧Memory Tip
把 in- 想成“不”，fidelity 想成“忠诚”，合起来就是“不忠诚、出轨”，记住对伴侣的背叛。
语境与语域Context & Register
语域：neutral 常见场景：news reports、formal writing、legal discussions infidelity 是比较正式的中性用词，多用于书面语、新闻报道或正式讨论；日常口语中更常说 cheating。请根据场合选择用词。
语法说明Grammar Note
可数时指具体不忠行为；常与to或in搭配。
发音与拼写Pronunciation & Spelling
这些词在拼写上均以 -lity 结尾，但重音位置和元音各不相同，因此都不与 infidelity /ˌɪnfɪˈdɛlɪti/ 押韵。尤其注意 fidelity /fɪˈdɛləti/ 与 infidelity 的结尾读音并不同，不要仅凭拼写猜测读音。
用法优先级Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
一起学习词形
Dictionary facts from ECDICT, WIKTIONARY.