investigate.
To inquire into or study in order to ascertain facts or information.
Meaning & usage
To inquire into or study in order to ascertain facts or information.
to investigate the causes of natural phenomena
He was asked to investigate a robbery.
To examine, look into, or scrutinize in order to discover something hidden or secret.
to investigate an unsolved murder
To conduct an inquiry or examination.
Where this word comes from
Recorded since circa 1510, a back-formation from investigation on the basis of -ate (verb-forming suffix), from Latin investīgātiō (“a searching into”), from investīgātus, the perfect passive participle of investīgō, equivalent to in- + vestigate. Displaced native Old English undersēċan (literally “to search under or between”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.