investigator

noun

in·​ves·​ti·​ga·​tor in-ˈve-stə-ˌgā-tər How to pronounce investigator (audio)
plural investigators
: one who investigates something: such as
a
: detective
a private investigator
Debra Winger plays the investigator who becomes fixated on identifying a killer …Margaret Rauch
b
: a person who conducts experiments or is involved in scientific studies for research
the lead investigator in a clinical trial
For dialect recording, it is best for the investigator to take down as full and accurate notes as possible without slowing down the pace of the interview.Ravin I. McDavid, Jr.

Examples of investigator in a Sentence

investigators who discovered new evidence that the universe was much older than had been previously estimated the investigator in charge of the case was touted as an expert at tracing stolen art
Recent Examples on the Web
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.
The Tesla had been at the impound lot for two days after being found abandoned on a Hollywood street, investigators said. Alex Stone, ABC News, 10 Sep. 2025 The vast, sprawling Conjuring franchise, which began back in 2013, has spawned a complex web of sequels, prequels and spin-offs, some of which are loosely based on cases covered by paranormal investigators Ed and Lorraine Warren. Dani Di Placido, Forbes.com, 10 Sep. 2025 While Tuesday’s report covers the experiences of more than 350 women who came forward to speak to the investigators, Danish authorities say more than 4,000 women and girls — reportedly half the fertile women in Greenland at the time — received IUDs between the 1960s and mid-1970s. Nick Lichtenberg, Fortune, 9 Sep. 2025 Ferguson said investigators may bring other charges against Brown, including potential hate crime charges. Charlotte Observer, 9 Sep. 2025 See All Example Sentences for investigator

Word History

First Known Use

1538, in the meaning defined above

Time Traveler
The first known use of investigator was in 1538

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Cite this Entry

“Investigator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/investigator. Accessed 11 Sep. 2025.

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