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.
According to the documents, investigators secured a search warrant for footage from inside the school and saw Morrison encourage other students to mentally and physically abuse a child at the school. Saleen Martin, USA Today, 1 May 2025 On April 16, investigators determined her account was accessed from an IP address at a home where 44-year-old Maximilian Bondrescu lived. Stepheny Price, FOXNews.com, 30 Apr. 2025 The girl drew a rough sketch of the home that aligned with what investigators found. Mitchell Willetts, Kansas City Star, 29 Apr. 2025 The suspect, 29-year-old Ronny Leon, took his son by force and sped away in a car with the baby in his lap, investigators said in the release. Shambhavi Rimal, Fort Worth Star-Telegram, 29 Apr. 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 3 May. 2025.

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