Etymograph

English

official

Official comes from Old French official, from Latin officiālis, from officium ‘duty, service’, ultimately from Proto-Indo-European *h₃ep- ‘to work’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₃ep-1‘to work’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₃ep-(i)-1reconstructed
  3. Proto-Italicc. 1500–700 BCE*opis1reconstructed
  4. Latinc. 75 BCE–200 CEops2as opis‘power, ability, resources’
  5. Latinc. 75 BCE–200 CEopificium3
  6. Latinc. 75 BCE–200 CEofficium3‘duty, service’
  7. Latinc. 75 BCE–200 CEofficiālis3
  8. Old Frenchc. 842–1400official3‘court official’
  9. Middle Englishc. 1150–1500official3
  10. Englishearliest quotation 1650official3

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin ops
  2. 2 Wiktionary, Latin officium
  3. 3 Wiktionary, English official
  4. Earliest quotation in Wiktionary’s entry: 1650, Thomas Browne, Pseudodoxia Epidemica: […]: “the stomach and other parts official unto nutrition”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₃ep-Wiktionary, Latin ops‘to work’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₃ep-(i)-Wiktionary, Latin opsreconstructed
  3. Proto-Italicc. 1500–700 BCE*opisWiktionary, Latin opsreconstructed
  4. Latinc. 75 BCE–200 CEopsWiktionary, Latin officiumas opis‘power, ability, resources’
  5. Latinc. 75 BCE–200 CEopificiumWiktionary, English official
  6. Latinc. 75 BCE–200 CEofficiumWiktionary, English official‘duty, service’
  7. Latinc. 75 BCE–200 CEofficiālisWiktionary, English official
  8. Old Frenchc. 842–1400officialWiktionary, English official‘court official’
  9. Middle Englishc. 1150–1500officialWiktionary, English official
  10. Englishearliest quotation 1650officialWiktionary, English official. Earliest quotation in Wiktionary’s entry: 1650, Thomas Browne, Pseudodoxia Epidemica: […]: “the stomach and other parts official unto nutrition”

Word family

English words that share an ancestor with official, grouped by the ancestor they share, most familiar first.

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

  • operation ← operacioun ← operacion ← operātiō ← operor
  • bus ← omnibus ← omnibus ← omnibus ← omnis
  • operate ← operātus ← opera ← opus ← *opos
  • operator ← operor ← operātus ← opera ← opus
  • opera
  • opus ← *opos ← *h₃épos
  • omnibus ← (voiture) omnibus ← omnis ← *opnis
  • oeuvre ← œuvre ← uevre ← opera
  • omnivore ← omnivorus ← omnis ← *opnis

through Latin ops ‘power, ability, resources’

  • copy ← copie ← copia ← cōps
  • optimum ← optimus
  • copious ← copiosus ← copia ← cōps

43 more relatives in the full family tree

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Today it means

adj Of or about an office or public trust.

Sources

Sources: Wiktionary, “official”; the older steps come from the Wiktionary entries for Latin ops, Latin officium. 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 *h₃ep- / official