Word · CEFR C2 · Frequency #9022
informant
线人；告密者；提供情报者
核心释义
a person who relays confidential information to someone, especially to the police; an informer.
- 1.
向他人(尤指警方)提供机密信息者；告密者。
One who relays confidential information to someone, especially to the police; an informer.
向他人(尤指警方)提供机密信息者；告密者。；提供消息者；密告者；被调查者；[经] 填报人；被征询人
用法In use
The informant provided the police with crucial evidence about the drug deal.
用法提示：本句中“informant”指提供情报的人，即“线人”。
Detectives often rely on informants to solve complex cases.
用法提示：本句中“informants”是复数形式，指多个提供消息的人。
Every informant in the survey was asked to fill out a detailed questionnaire.
用法提示：本句中“informant”指参与调查提供信息的人，即“被调查者”。
informant in [context/noun phrase]
The detective interviewed an informant in the smuggling ring.
侦探采访了走私团伙中的一个线人。
informant for [organization/person]
相关词与表达Connections
搭配Collocations
- key informant
- 关键线人
- The police relied on a key informant to crack the case.警方依靠一名关键线人破案。
- confidential informant
- 秘密线人
- The FBI protected the identity of its confidential informant.联邦调查局保护其秘密线人的身份。
- police informant
- 警方线人
- The drug lord suspected that one of his men was a police informant.毒枭怀疑他的一个手下是警方线人。
- informant report
- 线人报告
- The informant report led to a series of arrests.那份线人报告导致了一系列逮捕。
- informant interview
学习提示Learner notes
记忆技巧Memory Tip
想象蚂蚁（ant）传递信息（inform），即‘提供信息者’。
语境与语域Context & Register
语域：formal 常见场景：警方调查、学术研究 该词通常用于正式场合，如警方调查或学术研究。
语法说明Grammar Note
可数名词
发音与拼写Pronunciation & Spelling
None of these words rhyme perfectly with 'informant' (/ɪnˈfɒːmənt/). 'Important' (/ɪmˈpɔːtənt/), 'significant' (/sɪɡˈnɪfɪkənt/), and 'assistant' (/əˈsɪstənt/) share the same second-syllable stress and end in /ənt/, but their stressed vowels differ (/ɔː/, /ɪ/, and /ɪ/ vs. /ɒː/). The others have first-syllable stress and are not true rhymes, but all share the common spelling ending '-ant'.
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。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY, WORDNET.