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detect

Etymology and origin of the English word detect

History Permalink
Confidence
Established
Formation
Borrowing
First attested
1447
Borrowed from
Latin detectus via Middle English
Ultimate origin
Proto-Indo-European (*(s)teg-)

Pronunciation

  • IPA: /dɪˈtɛkt/ (UK)[1]

Etymology

It is inherited from Middle English detecten, borrowed from Latin dētēctus, past participle of dētegere, to uncover, expose, figuratively to discover,[2][3][4] from dē-, un-, off, and tegere, to cover (see thatch),[2][3][5] from PIE Proto-Indo-European *(s)teg- (“to cover”).[3]

Earliest recorded meaning

To uncover, lay bare, expose: probably before 1425 in Barnhart, the early 15th century in Etymonline, 1447 in the OED; this sense is obsolete.[2][3][6]

Semantic evolution

To expose a person by divulging his guilt or secrets is from about 1449,[6] and to find out the secret action or character of someone from the 1580s (1581).[3][6] The original senses were uncover, expose and give someone away; the sense discover came later.[7] To discover or ascertain the presence or existence of something is from 1756,[3][6] and to act as a detective from 1926.[6] In radio, to demodulate a signal is a modern technical sense.[8][9] Detective is first found in the 19th century in detective police.[4]

Timeline

  • before 1425 – to expose.[2]
  • c. 1449 – to expose a person.[6]
  • 1581 – to find out a secret.[6]
  • 1756 – to discover the presence of.[6]
  • 1926 – to act as a detective.[6]

Modern meaning

Verb

  1. To discover or notice the presence, existence or fact of something.
  2. To perceive the true nature of; to discern.
  3. (electronics) To extract information from a signal; to demodulate.

Word family

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  5. ^ Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  6. ^ a b c d e f g h i Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ Pearsall, Judy, ed. (1998), The New Oxford Dictionary of English, Oxford: Clarendon Press
  8. ^ The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
  9. ^ Collins English Dictionary (2023), Glasgow: HarperCollins

Related etymologies

Cite this entry

“Detect.” Etymologically, 17 Oct. 2026, etymologically.com/en/detect. Accessed 17 Oct. 2026.

Last edited on . ·