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.

The FBI is continuing to investigate the case, with three other defendants - all based in America and in their 20s - also facing criminal charges.

From BBC • Apr. 17, 2026

If adversaries can identify exploitable weaknesses at machine speed, the traditional defensive model—detect, investigate and respond—is under far greater strain than most admit.

From The Wall Street Journal • Apr. 17, 2026

Someone noticed a foul odor coming from the car and detectives arrived at the tow yard to investigate.

From Los Angeles Times • Apr. 16, 2026

That being so, Congress certainly has the power to investigate, if that’s what the president’s doing.

From Slate • Apr. 16, 2026

And because I finished my homework early, I figured I might as well investigate my secret question—the question I couldn’t find the words for.

From "The Science of Breakable Things" by Tae Keller

Vocabulary lists containing investigate

Jim Burke's Academic Vocabulary List

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List 8

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Word Generation Science - Preparing a Scientific Investigation

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