English edit

Etymology edit

Recorded since circa 1510, a back-formation from investigation, from Latin investīgātiō (a searching into), from investīgātus, the past participle of investigare, equivalent to in- +‎ vestigate. Displaced native Old English undersēċan (literally to search under or between).

Pronunciation edit

  • IPA(key): [ɪn.ˈvɛs.tɪ.ɡeɪ̯t]
  • (file)

Verb edit

investigate (third-person singular simple present investigates, present participle investigating, simple past and past participle investigated)

  1. (transitive) To inquire into or study in order to ascertain facts or information.
    to investigate the causes of natural phenomena
  2. (transitive) To examine, look into, or scrutinize in order to discover something hidden or secret.
    to investigate an unsolved murder
  3. (intransitive) To conduct an inquiry or examination.
    • 1903, Jack London, The Shadow and the Flash:
      "Why don't you investigate?" he demanded. And investigate I did.

Synonyms edit

Related terms edit

Translations edit

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Further reading edit

Italian edit

Etymology 1 edit

Verb edit


  1. inflection of investigare:
    1. second-person plural present indicative
    2. second-person plural imperative

Etymology 2 edit

Participle edit

investigate f pl

  1. feminine plural of investigato

Latin edit

Verb edit


  1. second-person plural present active imperative of investīgō

Spanish edit

Verb edit


  1. second-person singular voseo imperative of investigar combined with te