investigate

verb

in·​ves·​ti·​gate in-ˈve-stə-ˌgāt How to pronounce investigate (audio)
investigated; investigating

transitive verb

: to observe or study by close examination and systematic inquiry

intransitive verb

: to make a systematic examination
especially : to conduct an official inquiry
investigation noun
investigative adjective
investigatory adjective

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 Trump repeated that Manhattan District Attorney Alvin Bragg’s predecessor and federal prosecutors investigated him and declined to prosecute. Bart Jansen, USA TODAY, 22 Apr. 2024 Monroe County Sheriff’s deputies, one of whom was still investigating the scene Sunday, told the Free Press the name of the suspect or more details of the crash, such as her blood alcohol level, would not be released until after an arraignment, which was unlikely until Monday. Frank Witsil, Detroit Free Press, 22 Apr. 2024 Alcohol is being investigated as a possible factor in the crash. Karen Kucher, San Diego Union-Tribune, 22 Apr. 2024 Police are investigating the Friday night death of a person at a south Fort Worth residence, officials said. Harriet Ramos, Fort Worth Star-Telegram, 20 Apr. 2024 The Miami Fire Investigations Unit is still investigating the cause of the fire. Devoun Cetoute, Miami Herald, 20 Apr. 2024 Kwong was placed on paid leave the following spring, as Sheppard Mullin, a law firm hired by the county, spent more than two years investigating him. Rebecca Ellis, Los Angeles Times, 20 Apr. 2024 In Congress While in Washington, Pryor began investigating the state of the nation’s nursing homes, institutions that received billions of dollars in federal tax dollars but at the time faced little government oversight. Frank E. Lockwood, arkansasonline.com, 20 Apr. 2024 The benefits of delta-8 THC are being investigated by medical experts. John Tufts, The Indianapolis Star, 20 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'investigate.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Latin investigatus, past participle of investigare to track, investigate, from in- + vestigium footprint, track

First Known Use

15th century, in the meaning defined at transitive sense

Time Traveler
The first known use of investigate was in the 15th century

Dictionary Entries Near investigate

Cite this Entry

“Investigate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/investigate. Accessed 25 Apr. 2024.

Kids Definition

investigate

verb
in·​ves·​ti·​gate in-ˈves-tə-ˌgāt How to pronounce investigate (audio)
investigated; investigating
: to study by close examination and systematic inquiry
investigation noun
investigative adjective
investigator noun
investigatory adjective
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 How to pronounce investigate (audio)
investigated; investigating

transitive verb

: 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

intransitive verb

: to make a systematic examination
especially : to conduct an official inquiry
investigation noun
investigative adjective
investigator noun
investigatory adjective

More from Merriam-Webster on investigate

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!