investigation.
The act of investigating; the process of inquiring into or following up; research, especially patient or thorough inquiry or examination
Meaning & usage
The act of investigating; the process of inquiring into or following up; research, especially patient or thorough inquiry or examination
The investigation into the crime has led to various leads as well as plenty of dead ends.
Despite thorough investigation, the perpetrator of the attacks remains unknown.
Where this word comes from
From Middle English investigacioun, from Old French investigacion, from Latin investigatio. Morphologically investigate + -ion.
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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.