Etymograph

English

detective

Detective comes from Classical Latin dētegō ‘to detect’, from Latin tegō ‘cover, hide’, and ultimately from Proto-Indo-European *(s)teg-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*(s)teg-1‘to cover’reconstructed
  2. Proto-Italicc. 1500–700 BCE*tegō1‘to cover’reconstructed
  3. Latinc. 75 BCE–200 CEtegō1‘cover, hide’
  4. Classical Latinc. 75 BCE–200 CEdētegō2‘to detect’
  5. Englishearliest quotation 1887detective2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin detego
  2. 2 Wiktionary, English detective
  3. Earliest quotation in Wiktionary’s entry: 1887, Arthur Conan Doyle, A Study in Scarlet: “[…] Sherlock Holmes remarked calmly. […] "Well, I have…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*(s)teg-Wiktionary, Latin detego‘to cover’reconstructed
  2. Proto-Italicc. 1500–700 BCE*tegōWiktionary, Latin detego‘to cover’reconstructed
  3. Latinc. 75 BCE–200 CEtegōWiktionary, Latin detego‘cover, hide’
  4. Classical Latinc. 75 BCE–200 CEdētegōWiktionary, English detective‘to detect’
  5. Englishearliest quotation 1887detectiveWiktionary, English detective. Earliest quotation in Wiktionary’s entry: 1887, Arthur Conan Doyle, A Study in Scarlet: “[…] Sherlock Holmes remarked calmly. […] "Well, I have…”

The story

Noun sense 1 is an ellipsis of detective policeman, detective officer, or a similar construction. The later more general noun sense 2 was derived by extension. Noun sense 3 (‘a work of detective fiction’) is a semantic loan from Dutch detective and Russian детекти́в (detektív), both from English.

Full etymology on Wiktionary

Linked words

through Proto-Indo-European *(s)teg- ‘to cover’

tile, thug, sauna, thatch, staccato, toque, 29 more

through Latin tegō ‘cover, hide’

toga, 12 more

Today it means

noun A police officer tasked with collecting evidence and information in order to solve a crime; an investigator.

Sources

Sources: Wiktionary, “detective”; the older steps come from the Wiktionary entry for Latin detego. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *(s)teg- / detective

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