1
as in researcher
one who observes or studies by close examination and systematic inquiry investigators who discovered new evidence that the universe was much older than had been previously estimated

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2
as in detective
a person not on the police force who investigates criminal or illicit activity or searches for missing persons the investigator in charge of the case was touted as an expert at tracing stolen art

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Recent Examples of investigator Authorities in the Netherlands carried out a simultaneous search of Netflix’s Amsterdam office in the presence of French magistrates and investigators, Politico reported. Chris Morris, Fortune Europe, 5 Nov. 2024 Anyone with information may call homicide investigators at 510-238-3821 or the tip line at 510-238-7950. Harry Harris, The Mercury News, 7 Nov. 2024 The new and powerful forensic method has spread widely among law enforcement investigators over the past few years. Alaa Elassar, CNN, 5 Nov. 2024 Liberation reported that a raid was also being conducted simultaneously in Netflix’s European HQ in the Netherlands, following months-long cooperation between French and Dutch investigators. Melanie Goodfellow, Deadline, 5 Nov. 2024 See all Example Sentences for investigator 

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“Investigator.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/investigator. Accessed 1 Dec. 2024.

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