Keen, eager or sharp, is an Old English word, while keen, to wail for the dead, was borrowed from Irish in the 19th century.[1][2][3]
Pronunciation
- IPA: /kin/; /kiːn/ (UK)[4]
keen1 sharp, eager
- Confidence
- Established
- Formation
- Inherited
- First attested
- c. 897
- Inherited from
- Old English cēne
- Ultimate origin
- Proto-Germanic (*kōnijaz)
Etymology
It is Middle English kene, inherited from Old English cēne (“bold, brave; clever, wise”),[1][2][5] from Proto-Germanic *kōnjaz,[3] cognate with Old Norse kœnn, skilful, wise, Middle Dutch coene, bold (Dutch koen), and Old High German kuoni (German kühn (“bold, daring”)).[1][2][3] Hoad finds no certain cognates outside Germanic,[3] while Barnhart relates it to the root of can and ken, from PIE *ĝon-, to know.[2] Etymonline suggests the connecting notion was to be able.[1]
Earliest recorded meaning
Brave, bold: about 897;[6] wise, learned, before 1000.[6] Barnhart dates Old English cēne before 725.[2]
Semantic evolution
The OED calls the original meaning somewhat obscure: it seems to have been both brave and skilled.[1] The physical sense, sharp-edged or sharp-pointed, is from about 1200 and peculiar to English.[1][6] From about 1300 it was used of sounds, loud or shrill, and of cold, wind or fire, biting,[1] and eager, ardent from about 1300 (14th century in Hoad).[1][3] Of eyesight it is from about 1720.[1] A word of approval in student slang from about 1900,[1] wonderful or perfect, is first recorded in American English in 1914.[2] Collins gives the British keen on, fond of.[7]
Timeline
- c. 897 – brave.[6]
- c. 1200 – sharp-edged.[1]
- c. 1300 – eager; shrill; biting.[1]
- c. 1720 – of eyesight.[1]
- 1914 – wonderful (US slang).[2]
Modern meaning
Adjective
- Eager or enthusiastic.
- (keen on) Fond of; very interested in.
- Having a fine, sharp edge or point.
- Quick and sharp in mind: a keen wit.
- Of the senses, very sensitive: keen eyesight.
- Intense or piercing, as wind or cold.
- (dated slang) Great, splendid.
Word family
- keenly
- keenness
keen2 lament
- Confidence
- Established
- Formation
- Borrowing
- First attested
- 1811
- Borrowed from
- Irish caoinim
- Ultimate origin
- Irish (caoinim)
Etymology
It is borrowed from Irish caoinim (“I weep, wail, lament”),[1][2][3] from Old Irish coinim (“I wail”).[1][2] The noun is from Irish caoine, a lament.[2][8]
Earliest recorded meaning
To lament loudly over the dead: 1811, implied in keener, one who keens.[2][1]
Semantic evolution
The noun, an Irish funeral song with wailing for the dead, is from 1830.[6][2] To utter in a shrill voice is from 1893.[1] The EDD records it in Scotland, Ireland and Northumberland.[9]
Timeline
Modern meaning
Verb
- To wail in lamentation, especially for the dead.
Noun
- A loud, wailing lament for the dead.
Word family
- keener
- keening
Related words
- can
- ken
- know
References
- ^ a b c d e f g h i j k l m n o p q r Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
- ^ a b c d e f g h i j k l m Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
- ^ a b c d e f Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
- ^ Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
- ^ a b c d e f Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
- ^ Collins English Dictionary (2023), Glasgow: HarperCollins
- ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
- ^ Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)
Related etymologies
- leprechaun · also from Irish
- phony · also from Irish
- bother · also from Irish
- banshee · also from Irish
- galore · also from Irish
- smithereens · also from Irish
- play · also from Old English
- night · also from Old English
Cite this entry
“Keen.” Etymologically, 16 Oct. 2026, etymologically.com/en/keen. Accessed 16 Oct. 2026.
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