investigate
verb
in·ves·ti·gate
in-ˈve-stə-ˌgāt 
investigated; investigating
: to observe or study by close examination and systematic inquiry
: to make a systematic examination
especially
: to conduct an official inquiry
Examples of investigate in a Sentence
The police are still investigating the murder.
The accident was thoroughly investigated.
The manager promised to investigate when we pointed out an error on our bill.
He was investigated for his involvement in the incident.
Recent Examples on the Web
The national police Anti-Cybercrime Group is currently investigating another deepfake of Marcos promoting an online trading platform.
—
Cecilia Hult, Fortune, 28 June 2025
The Los Angeles Police Department was called to investigate the incident and quickly zeroed in on Rodriguez after obtaining surveillance footage from nearby businesses.
—Louis Casiano, FOXNews.com, 27 June 2025
Any malicious attack on one of us is an attack on all of us, and CBP will continue to work with our investigating and prosecuting partners to deal swift and severe justice to perpetrators.
—Jordan King, MSNBC Newsweek, 27 June 2025
So Almonte, 23, who also needed to see a doctor, investigated her employer's health offerings.
—Renuka Rayasam, NPR, 27 June 2025
See All Example Sentences for investigate
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Cecilia Hult, Fortune, 28 June 2025
The Los Angeles Police Department was called to investigate the incident and quickly zeroed in on Rodriguez after obtaining surveillance footage from nearby businesses.
—Louis Casiano, FOXNews.com, 27 June 2025
Any malicious attack on one of us is an attack on all of us, and CBP will continue to work with our investigating and prosecuting partners to deal swift and severe justice to perpetrators.
—Jordan King, MSNBC Newsweek, 27 June 2025
So Almonte, 23, who also needed to see a doctor, investigated her employer's health offerings.
—Renuka Rayasam, NPR, 27 June 2025
See All Example Sentences for investigate
Cite this Entry
“Investigate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/investigate. Accessed 8 Jul. 2025.
Copy CitationKids Definition
investigate
verb
in·ves·ti·gate
in-ˈves-tə-ˌgāt
investigated; investigating
: to study by close examination and systematic inquiry
Etymology
from Latin investigare "to track, investigate," from in- "in, toward" and vestigium "footprint" — related to vestige
Word Origin
A detective investigating a crime may find the criminal by following clues. In much the same way, a hunter may find game by following tracks. The origins of the word investigate show how fitting it is to compare the detective to the hunter. The Latin word vestigium meant "footprint, track." Joined with the prefix in-, the noun vestigium gave rise to the verb investigare. This word meant both "to track or trace by footprints" and "to study or examine closely." Only the second meaning was kept when the verb was borrowed into English as investigate.
Legal Definition
investigate
verb
in·ves·ti·gate
in-ˈves-tə-ˌgāt
investigated; investigating
: to observe or study by close examination and systematic inquiry
specifically
: to make (a criminal suspect) the subject of inquiry and study for the purpose of establishing probable cause
: to make a systematic examination
especially
: to conduct an official inquiry
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