Tra từ investigate - Từ điển Oxford Advanced Learner 8th

in·ves·ti·gate AW [investigate investigates investigated investigating] BrE [ɪnˈvestɪɡeɪt] NAmE [ɪnˈvestɪɡeɪt] verb
1. intransitive, transitive to carefully examine the facts of a situation, an event, a crime, etc. to find out the truth about it or how it happened
• The FBI has been called in to investigate.
• (informal) ‘What was that noise?’ ‘I'll go and investigate.’
•~ sth Police are investigating possible links between the murders.
•~ what, how, etc… Police are investigating what happened.
2. transitive ~ sb (for sth) to try to find out information about sb's character, activities, etc
• This is not the first time he has been investigated by the police for fraud.
3. transitive, intransitive to find out information and facts about a subject or problem by study or research
•~ (sth) Scientists are investigating the effects of diet on fighting cancer.
•~ how, what, etc… The research investigates how foreign speakers gain fluency.
Verb forms:

Word Origin:
early 16th cent.: from Latin investigat- ‘traced out’, from the verb investigare, from in- ‘into’ + vestigare ‘track, trace out’.

Thesaurus:
investigate verb I, T
•Police are investigating links between the two murders.
explore • • look into sth • • research • • inquire/enquire into sth • • delve into sth • |especially journalism probe •
investigate/explore/look into/research/inquire into what/why/how/whether…
investigate/explore/look into/research/inquire into a problem/matter
investigate/explore/look into/research/delve into a subject

Collocations:
Crime
Committing a crime
commit a crime/a murder/a violent assault/a brutal killing/an armed robbery/fraud
be involved in terrorism/a suspected arson attack/people smuggling/human trafficking
engage/participate in criminal activity/illegal practices/acts of mindless vandalism
steal sb's wallet/purse/(BrE) mobile phone/(NAmE) cell phone
rob a bank/a person/a tourist
break into/ (BrE) burgle/ (NAmE) burglarize a house/a home/an apartment
hijack a plane/ship/bus
smuggle drugs/weapons/arms/immigrants
launder drug money (through sth)
forge documents/certificates/passports
take/accept/pay sb/offer (sb) a bribe
run a phishing/an email/an Internet scam
Fighting crime
combat/fight crime/terrorism/corruption/drug trafficking
prevent/stop credit-card fraud/child abuse/software piracy
deter/stop criminals/burglars/thieves/shoplifters/vandals
reduce/tackle/crack down on knife/gun/violent/street crime; (especially BrE) antisocial behaviour
foil a bank raid/a terrorist plot
help/support/protect the victims of crime
Investigating crime
report a crime/a theft/a rape/an attack/(especially BrE) an incident to the police
witness the crime/attack/murder/incident
investigate a murder/(especially NAmE) a homicide/a burglary/a robbery/the alleged incident
conduct/launch/pursue an investigation (into…); (especially BrE) a police/murder inquiry
investigate/reopen a criminal/murder case
examine/investigate/find fingerprints at the crime scene/the scene of crime
collect/gather forensic evidence
uncover new evidence/a fraud/a scam/a plot/a conspiracy/political corruption/a cache of weapons
describe/identify a suspect/the culprit/the perpetrator/the assailant/the attacker
question/interrogate a suspect/witness
solve/crack the case
more collocations at ↑justice

Example Bank:
•He is being investigated for illegal business dealings.
•Police have been called in to investigate the complaints.
•The allegations have not yet been properly investigated.
•The company has pledged to investigate claims that its products are unsafe.
•‘What was that noise?’ ‘I'll go and investigate.’
•Police are investigating possible links between the two murders.