Etymograph

English

aculeate

Aculeate comes from Latin aculeātus ‘prickly’, from acus ‘needle’, and ultimately from Proto-Indo-European *h₂eḱ- ‘sharp’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱ-1‘sharp’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱus1‘pointed’reconstructed
  3. Latinc. 75 BCE–200 CEacus2‘needle’
  4. Latinc. 75 BCE–200 CEaculeātus2‘prickly’
  5. Englishtodayaculeate2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin acus
  2. 2 Wiktionary, English aculeate

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱ-Wiktionary, Latin acus‘sharp’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱusWiktionary, Latin acus‘pointed’reconstructed
  3. Latinc. 75 BCE–200 CEacusWiktionary, English aculeate‘needle’
  4. Latinc. 75 BCE–200 CEaculeātusWiktionary, English aculeate‘prickly’
  5. EnglishtodayaculeateWiktionary, English aculeate

Linked words

through Proto-Indo-European *h₂eḱ- ‘sharp’

hear, edge, egg, acid, ear, hammer, eager, axe, oxide, vinegar, mediocre, acne, mediocrity, paragon, hark, acacia, acme, acetate, acumen, exacerbate, acuity, acyl, acrimony, acrid, acerbic, roselle, exacerbation, rosacea, 71 more

through Latin acus ‘needle’

acute, acupuncture, 17 more

Today it means

adj Having a sting; sharp like a prickle.

Sources

Sources: Wiktionary, “aculeate”; the older steps come from the Wiktionary entry for Latin acus. 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 *h₂eḱ- / aculeate

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