Etymograph

English

acumen

Acumen comes from Latin acūmen ‘sharp point’, and goes back to Proto-Indo-European *h₂eḱ-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱ-1‘sharp’root named by Wiktionary
  2. Latinc. 75 BCE–200 CEacūmen1‘sharp point’
  3. Englishearliest quotation 1842acumen1

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, English acumen
  2. Earliest quotation in Wiktionary’s entry: 1842, anonymous collaborator of Letitia Elizab, Keeping up Appearances. […]: “I am going to ask you a question that…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱ-Wiktionary, English acumen‘sharp’root named by Wiktionary
  2. Latinc. 75 BCE–200 CEacūmenWiktionary, English acumen‘sharp point’
  3. Englishearliest quotation 1842acumenWiktionary, English acumen. Earliest quotation in Wiktionary’s entry: 1842, anonymous collaborator of Letitia Elizab, Keeping up Appearances. […]: “I am going to ask you a question that…”

Linked words

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

hear, edge, egg, ear, acid, eager, hammer, axe, oxide, vinegar, acute, acne, mediocre, paragon, mediocrity, acetate, hark, exacerbate, acacia, acupuncture, acuity, acme, acyl, roselle, rosacea, acrimony, exacerbation, acrid, acerbic, 72 more

Today it means

noun Quickness of perception or discernment; penetration of mind; the faculty of nice discrimination; acuity of mind.

Sources

Sources: Wiktionary, “acumen”. 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- / acumen

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