Etymograph

English

cooperate

Cooperate comes from Late Latin cooperātus ‘having worked together with another’, from cooperor ‘to work with’, and ultimately from Proto-Indo-European *h₃ep-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₃ep-‘to work, toil, make’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*h₃épos‘work’reconstructed
  3. Proto-Italicc. 1500–700 BCE*opos‘work’reconstructed
  4. Latinc. 75 BCE–200 CEopus‘work, labor, accomplishment’
  5. Latin, derivedc. 75 BCE–200 CEopera
  6. Latin, derivedc. 75 BCE–200 CEoperātus‘having worked, laboured, toiled’
  7. Latin, derivedc. 75 BCE–200 CEoperor‘to work, labor’
  8. Late Latinc. 200–600 CEcooperor‘to work with’
  9. Late Latin, derivedc. 200–600 CEcooperātus‘having worked together with another’perfect passive participle of cooperor
  10. Englishearliest quotation 2012cooperate

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₃ep-‘to work, toil, make’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*h₃épos‘work’reconstructed
  3. Proto-Italicc. 1500–700 BCE*opos‘work’reconstructed
  4. Latinc. 75 BCE–200 CEopus‘work, labor, accomplishment’
  5. Latin, derivedc. 75 BCE–200 CEopera
  6. Latin, derivedc. 75 BCE–200 CEoperātus‘having worked, laboured, toiled’
  7. Latin, derivedc. 75 BCE–200 CEoperor‘to work, labor’
  8. Late Latinc. 200–600 CEcooperor‘to work with’
  9. Late Latin, derivedc. 200–600 CEcooperātus‘having worked together with another’perfect passive participle of cooperor
  10. Englishearliest quotation 2012cooperate

Earliest quotation: 2012, Matt Bai, Winning a Second Term, Obama Will Confront Familiar Headwind: “In polling by the Pew Research Center in November…”

Formed from co- + operate

Proto-Indo-European *ḱóm ‘beside, near, by, with’

Proto-Italic *kom ‘with, along, at’

Proto-Italic *kom- ‘together’

English co-

Proto-Indo-European *h₃ep- ‘to work’

…

Proto-Italic *opos ‘work’

Latin opus ‘work’

Latin opera

Latin operātus ‘having worked’

English operate

The story

Originated 1595–1605 from Late Latin cooperātus, perfect passive participle of cooperor (‘to work with’), see -ate (verb-forming suffix) for more.

Linked words

through Proto-Indo-European *h₃ep- ‘to work, toil, make’

office, official, bus, copy, omnibus, copious, opulence, officiate, omnivore, officiant, officious, 22 more

through Latin opus ‘work, labor, accomplishment’

opus, 10 more

through Latin opera

opera, ure, oeuvre, operetta, 9 more

through Latin operor ‘to work, labor’

operation, operator, operative, 3 more

Today it means

verb To work or act together, especially for a common purpose or benefit.

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

Etymograph / Proto-Indo-European *h₃ep- / cooperate