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Definitions

investigate

[in-ves-ti-geyt] / ɪnˈvɛs tɪˌgeɪt /
VERB
check into thoroughly
Synonyms
STRONGEST
consider examine explore inspect interrogate probe question review scrutinize search study
STRONG
bug case delve dig eyeball frisk inquire muckrake poke prospect pry read reconnoiter research scout sift spy tap wiretap
WEAK
be all ears check out check over check up feel out give the once-over go into inquisite listen in look into look over make inquiry nose around put to the test run down stake out
Antonyms
STRONGEST
answer forget ignore neglect reply
STRONG
leave alone overlook

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Halladay's next step is to investigate astrocytes throughout the broader network involved in fear.

From Science Daily • Apr. 4, 2026

Cdr Helen Flanagan, head of Counter Terrorism Policing London, said: "Since this appalling attack last week, we have been working continuously to investigate and identify those responsible."

From BBC • Apr. 3, 2026

Last month, her family took legal action against the Los Angeles Unified School District, alleging that school officials failed to investigate reports of bullying, adequately supervise student interactions or implement effective safety measures.

From Los Angeles Times • Apr. 2, 2026

“If they pay a claim, or even investigate it, and the vessel is linked to sanctioned entities, they could face very serious consequences.”

From The Wall Street Journal • Mar. 31, 2026

You might want to investigate everyone I know.

From "The Mona Lisa Vanishes" by Nicholas Day

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.