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 film details how investigators believed Baumeister may have filmed his victims with a secret camera hidden in an air vent in his basement. Stephanie Nolasco, Fox News, 1 Mar. 2025 Two people who had been shot were found dead inside a Thornton home on Wednesday that investigators believe was intentionally set on fire, police said. Katie Langford, The Denver Post, 1 Mar. 2025 According to authorities, investigators have not found any evidence indicating the victim was responsible for the ATV thefts. Justin Muszynski, Hartford Courant, 1 Mar. 2025 Also poorly understood for many years were the findings and intentions of Florida environmental investigators and regulators. Kevin Spear, Orlando Sentinel, 28 Feb. 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 13 Mar. 2025.

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