Etymograph

English

retentor

Retentor comes from Latin retentor ‘one who holds back’, from Proto-Italic *wre- ‘again’, and perhaps ultimately from Proto-Indo-European *wre- ‘back’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*wre-1‘back’uncertain
  2. Proto-Italicc. 1500–700 BCE*wre-2‘again’reconstructed
  3. Latinc. 75 BCE–200 CEretinere3‘retain, hold back’
  4. Latinc. 75 BCE–200 CEretentor4‘one who holds back’
  5. Englishtodayretentor4

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Proto-Italic *wre-
  2. 2 Wiktionary, Latin re-, which cites OED
  3. 3 Wiktionary, Latin retentor
  4. 4 Wiktionary, English retentor

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*wre-Wiktionary, Proto-Italic *wre-‘back’uncertain
  2. Proto-Italicc. 1500–700 BCE*wre-Wiktionary, Latin re-, which cites OED‘again’reconstructed
  3. Latinc. 75 BCE–200 CEretinereWiktionary, Latin retentor‘retain, hold back’
  4. Latinc. 75 BCE–200 CEretentorWiktionary, English retentor‘one who holds back’
  5. EnglishtodayretentorWiktionary, English retentor

Linked words

through Proto-Italic *wre- ‘again’

require, rescue, reverse, rely, remark, reminiscent, reciprocal, revoke, reciprocate, repellent, refrigerate, repulse, rappel, regurgitate, 14 more

through Latin retinere ‘retain, hold back’

retain

Today it means

noun A muscle which holds a body part in place, notably in extended or retracted position

Sources

Sources: Wiktionary, “retentor”; the older steps come from the Wiktionary entries for Proto-Italic *wre-, Latin re-, Latin retentor. 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 *wre- / retentor

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