Definition of investigatornext
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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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of investigator The money was supposed to pay for expenses including roofing, collections, security, landscaping and general renovations, according to investigators. Chelsea Jones, CBS News, 28 Aug. 2026 Federal safety investigators urged automakers to give emergency responders better guides on how to fight lithium-ion battery fires. Todd C. Frankel, Washington Post, 28 Aug. 2026 In December 2025, he was indicted by a federal grand jury on charges of cyberstalking Mica and making false statements to federal investigators. Britt Hayes, Entertainment Weekly, 28 Aug. 2026 There, investigators found a man suffering from gunshot wounds, VanBibber said. Caroline Zimmerman, Kansas City Star, 28 Aug. 2026 See All Example Sentences for investigator
Recent Examples of Synonyms for investigator
Noun
  • Developed by researchers in the US, the remarkable new treatment could one day be used to treat patients in advanced stages of dementia by restoring the brain’s ability to recover from ongoing neurodegeneration.
    Mike McRae August 30, New Atlas, 31 Aug. 2026
  • About a decade later, the researchers Simon Broadbent and John Hammersley — wanting to understand the carbon filters in gas masks — developed a mathematical model.
    Leila Sloman, Quanta Magazine, 31 Aug. 2026
Noun
  • Michelle Monaghan plays detective Amanda Beck, with Hamish Linklater and Owen Teague also starring.
    Erik Kain, Forbes.com, 29 Aug. 2026
  • Psychiatrists need to be good detectives during the entire process, even after a patient is on a medicine.
    Jen Christensen, CNN Money, 29 Aug. 2026

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Cite this Entry

“Investigator.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/investigator. Accessed 3 Sep. 2026.

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