Etymologically

oak

Etymology and origin of the English word oak

Confidence
Established
Formation
Inherited
First attested
749
Inherited from
Old English āc
Ultimate origin
Proto-Germanic (*aiks)

Pronunciation

  • IPA: /oʊk/, /woʊk/; /əʊk/ (UK)[1]

Etymology

It is Middle English oke, ook, inherited from Old English āc (“oak tree”),[2][3][4] partly also from Old Norse eik,[3] from Proto-Germanic *aiks,[3][5] source also of Old Saxon ēk, Dutch eik and German Eiche,[2][3] with no certain cognates outside Germanic;[3][5] Word Origins and MWU relate it to Latin aesculus (“a kind of oak”) and Greek aigilōps.[6][4]

Earliest recorded meaning

The tree: 749 in the OED, about 700 in Barnhart.[7][2]

Semantic evolution

The usual Indo-European word for oak, *deru-, became English tree, which Etymonline takes to reflect the importance of the oak to the ancient Indo-Europeans.[3] As Iceland had no oaks, Old Norse eik came to mean any tree there.[3] English Bibles use oak for Hebrew ēlāh, probably the terebinth (1382).[7][3] Oak timber, especially for ships, is Old English,[7] hence Garrick's Heart of oak are our ships.[6] Other trees resembling oaks were called oak from 1551, including Australian casuarinas from 1802.[7]

Timeline

  • 749 – the tree.[7]
  • before 1000 – oak timber for ships.[7]
  • 1382 – in the Bible, the terebinth.[7]
  • 1551 – other oak-like trees.[7]
  • 1802 – Australian she-oaks.[7]

Modern meaning

Noun

  1. A large tree of the genus Quercus, bearing acorns.
  2. The hard, durable wood of this tree.

Word family

  • oaken
  • oaklike
  • blackjack oak
  • black oak

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b c d e f g h Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  5. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  6. ^ a b Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
  7. ^ a b c d e f g h i Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press

Related etymologies

  • hear · also from Old English
  • hot · also from Old English
  • east · also from Old English
  • main · also from Old English
  • field · also from Old English
  • town · also from Old English
  • mother · also from Old English
  • month · also from Old English
Cite this entry

“Oak.” Etymologically, 16 Oct. 2026, etymologically.com/en/oak. Accessed 16 Oct. 2026.

Last edited on . ·