›[I or T]to examine a crime, problem, statement, etc. carefully, especially to discover the truth: The FBI was called in to investigate.Detectives will continue to investigate the incident.investigate allegations/claims/complaints of sthThe office is investigating the allegations of embezzlement.investigate how/whether/whyThe commission will investigate whether these companies violated anti-trust laws.
›[T]to try to discover the truth about someone who is accused of a crime: investigate sb for sthThe IRS are investigating Williams for alleged tax fraud.
investigatornoun[C]›Investigators discovered that the bank had covered up massive bad loans.