Etymologically

investigate

Etymology and origin of the English word investigate

Confidence
Established
Formation
Borrowing, Back-formation
First attested
c. 1510
Borrowed from
Latin investigatus
Ultimate origin
Latin (vestīgium)

Pronunciation

  • IPA: /ɪnˈves.tɪ.ɡeɪt/[1]

Etymology

It is probably a back-formation from investigation, after borrowed from Latin investīgātus, the past participle of investīgāre (“to trace out, search into”),[2][3][4] from in- (“in, into”) and vestīgāre (“to track, trace”),[2][5][6] from vestīgium (“footprint, track”) (see vestige).[2][3][7]

Earliest recorded meaning

To search or inquire into, to examine a matter systematically: about 1510.[8][2][4]

Semantic evolution

The Latin verb was first a hunter's word, to follow tracks, and only figuratively to search into.[3] The intransitive use, to make a search or inquire systematically, is also from about 1510,[8] and the literal sense of tracing out or tracking, rare in English, is recorded in 1774 and is obsolete.[8] Investigation is older, apparently before 1425 in a translation of Higden's Polychronicon,[2] and investigator is from 1552.[2] Collins notes that it is used especially of inquiries into a crime or a death.[7]

Timeline

  • before 1425 – investigation.[2]
  • c. 1510 – to investigate.[8][2]
  • 1552 – investigator.[2]
  • 1774 – to track, trace (obsolete).[8]

Modern meaning

Verb

  1. To inquire into or examine something in detail and systematically, especially to find out the truth.
  2. To make a detailed inquiry or systematic examination.

Word family

  • investigable
  • investigation
  • investigative
  • investigator
  • investigatory
  • uninvestigated
  • reinvestigate
  • uninvestigating
  • investigational
  • vestige
  • vestigial

References

  1. ^ Jones, Daniel (2011), Cambridge English Pronouncing Dictionary, 18th ed., ed. Peter Roach, Jane Setter and John Esling, Cambridge: Cambridge University Press
  2. ^ a b c d e f g h i Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  5. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  6. ^ Pearsall, Judy, ed. (1998), The New Oxford Dictionary of English, Oxford: Clarendon Press
  7. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins
  8. ^ a b c d e Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press

Related etymologies

Cite this entry

“Investigate.” Etymologically, 16 Oct. 2026, etymologically.com/en/investigate. Accessed 16 Oct. 2026.

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