Etymograph

English

equieffective

Equieffective comes from French effectif ‘number of members of a group’, from Latin effectīvus ‘creative’, and ultimately from Proto-Indo-European *dʰeh₁k-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*dʰeh₁k-reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*dʰh₁kyétireconstructed
  3. Proto-Italicc. 1500–700 BCE*θakjōreconstructed
  4. Proto-Italic, derivedc. 1500–700 BCE*fakjō‘to make’reconstructed
  5. Latinc. 75 BCE–200 CEfaciō‘to make, construct, fashion, frame, build, erect’
  6. Latin, derivedc. 75 BCE–200 CEefficiō‘to make out or work out’
  7. Latin, derivedc. 75 BCE–200 CEeffectīvus‘creative’
  8. Frenchc. 1600–presenteffectif‘number of members of a group’
  9. English1500–presenteffective
  10. Englishearliest quotation 2015equieffective

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*dʰeh₁k-reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*dʰh₁kyétireconstructed
  3. Proto-Italicc. 1500–700 BCE*θakjōreconstructed
  4. Proto-Italic, derivedc. 1500–700 BCE*fakjō‘to make’reconstructed
  5. Latinc. 75 BCE–200 CEfaciō‘to make, construct, fashion, frame, build, erect’
  6. Latin, derivedc. 75 BCE–200 CEefficiō‘to make out or work out’
  7. Latin, derivedc. 75 BCE–200 CEeffectīvus‘creative’
  8. Frenchc. 1600–presenteffectif‘number of members of a group’
  9. English1500–presenteffective
  10. Englishearliest quotation 2015equieffective

Earliest quotation: 2015: “Construction of regression curves and calculating of the equieffective…”

A compound of equi- + effective

Old Latin aiquos

Latin aequus ‘equal’

English equi-

Latin efficiō ‘to make; bring about’

Latin effectīvus ‘productive; effective’

French effectif ‘effective’

English effective

Linked words

through Proto-Italic *θakjō

affectionate, imperfection, putrefaction, 63 more

through Proto-Italic *fakjō ‘to make’

factor, difficulty, interface, manufacture, perfection, faction, affection, facet, imperfect, defection, deface, affective, defector, confectionary, affectation, 66 more

through Latin faciō ‘to make, construct, fashion, frame, build, erect’

face, fact, difficult, perfect, profit, feature, facility, faculty, sacrifice, affair, facial, affect, facilitate, deficit, infection, feat, superficial, facade, fetish, counterfeit, defect, deficient, facsimile, façade, infect, hacienda, maleficent, aficionado, parfait, beautify, facies, difficile, confit, beneficent, confection, effector, refectory, 81 more

through Latin efficiō ‘to make out or work out’

effect, efficient, efficacy, efficacious, 14 more

through English effective

effectively, effectiveness, ineffective, 10 more

Today it means

adj equally effective

Language periods are conventional ranges, not dates for this word.

Etymograph / Proto-Indo-European *dʰeh₁k- / equieffective