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TOEFL IELTS BNC: 1708 COCA: 1802

investigate

Word family 
in·ves·ti·gate /ɪnˈvestɪɡeɪt/ ●●● W2 AWL verb  
1  [intransitiveI, transitiveT]INVESTIGATE to try to find out the truth about something such as a crime, accident, or scientific problem 查明；调查；侦查〔犯罪、事故或科学问题等的真相〕
 The state police are investigating the incident.
州警察正调查此事。
 The study investigates the impact of violent TV programming on children.
该研究调查暴力电视节目对儿童的影响。
 I heard a noise and went downstairs to investigate.
我听见响声，就下楼去看个究竟。
 Register
In everyday English, people often say look into something rather than investigate something: 在日常英语中,人们常说look into something,而不说investigate something
I’ll ask my colleague to look into it.
我会请同事查一下这件事。
2  [transitiveT]SCCINVESTIGATE to try to find out more about someone’s character, actions etc, because you think they may have been involved in a crime 调查〔某人，因认为某人可能卷入了罪案〕
 Penney was already being investigated by the police on suspicion of murder.
彭尼因涉嫌谋杀已在接受警方调查。
n THESAURUS
investigate to try to find out the truth about something such as a crime, accident, or scientific problem
Police are investigating an explosion in the city centre.
The aim of the study is to investigate how climate change is affecting animal behaviour.
There were fears he may have drowned in the lake, so divers were sent down to investigate.
look into something to find out more about a problem, especially after someone has asked you to do this
The manager promised to look into my complaint.
Please could you look into the matter for me?
explore to consider or discuss something, in order to help you decide what you should do
Military leaders are exploring new ways of defending the United States from terrorism.
I’m going to explore the possibility of a part-time job.
probe [intransitiveI, transitiveT] to try to find secret or hidden information, especially by asking questions
The press began probing into the actor’s private life.
We have been probing the reasons why the government has been so slow to react to the problem of climate change.
delve [intransitiveI] to look somewhere in order to try to find more information about something, especially something that is difficult to find out about
Over the past year Ms Deen has been delving into the national archives, in order to discover information on the early Muslim settlers.
I think we need to delve a little deeper.
be under investigation if someone or their activities are under investigation, the police are trying to find out if they have done something illegal
Several public figures are under investigation for corruption.
Examples from the Corpus
investigate• We sent our reporter, Michael Gore, to investigate.• Police are investigating an explosion at the city store.• Hunt was investigated for more than a year before he was arrested.• The commission will investigate the cause of the accident, focusing especially on safety issues.• The FBI has been called in to investigate the murder.
From Longman Business Dictionary
investigatein·ves·ti·gate /ɪnˈvestɪgeɪt/ verb [intransitiveI, transitiveT]
to try to discover the truth about a crime, accident etc
The fraud office isinvestigating allegations of insider trading by a former employee of the firm.
—investigation noun [countableC, uncountableU]
a bankerunder criminal investigation
a federal investigation into junk bond trading
—investigator noun [countableC]
a government investigator
Origin investigate
(1500-1600) Latin past participle of investigare “to follow the track of”, from vestigium “track”
in·ves·ti·gate verb →REGISTER1 →n THESAURUS1
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