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
While she was getting settled in Australia, police in Palm Beach began investigating Epstein in 2005.
—
Julie K. Brown, Miami Herald, 31 Mar. 2025
Every aspect of the incident is being thoroughly investigated, and strong, proportionate consequences have already been delivered.
—Ron Estes, MSNBC Newsweek, 31 Mar. 2025
Authorities in Moscow moved quickly to investigate and quash the reports.
—Ron Estes, MSNBC Newsweek, 31 Mar. 2025
The cause of the fire is being investigated by the West Hartford Fire Marshal’s Office.
—Justin Muszynski, Hartford Courant, 31 Mar. 2025
See All Example Sentences for investigate
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Julie K. Brown, Miami Herald, 31 Mar. 2025
Every aspect of the incident is being thoroughly investigated, and strong, proportionate consequences have already been delivered.
—Ron Estes, MSNBC Newsweek, 31 Mar. 2025
Authorities in Moscow moved quickly to investigate and quash the reports.
—Ron Estes, MSNBC Newsweek, 31 Mar. 2025
The cause of the fire is being investigated by the West Hartford Fire Marshal’s Office.
—Justin Muszynski, Hartford Courant, 31 Mar. 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 19 Apr. 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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