keen
Pluralkeens
- 1Showing quick and eager willingness or interest, often directed toward an activity or goal.
Investors were keen to back the project once the figures were released.
He has always been a keen gardener, up at dawn among the flower beds.
UsageKeen on a thing or person, keen to + verb: keen to learn. I'm keen alone can mean yes, gladly.
Similareager, enthusiastic, avid, ardent, passionate
Oppositereluctant, unwilling, unenthusiastic, indifferent
- 2Showing quick, sharp understanding; mentally acute and penetrating in perception or judgment.
The detective brought a keen intelligence to every case she handled.
A keen observer, he noticed the slight tremor in the witness's voice.
UsageCommon in a keen eye, a keen mind and a keen observer.
Similarsharp, astute, acute, shrewd, perceptive
Note
Mental sharpness is older in this word than it looks. Old English cēne could already mean learned, clever or wise. Behind it lies a Germanic word for the knowledgeable and skillful, from a root meaning "to know." A keen mind is therefore close to the word's origins. It pairs naturally with wits, thought and inquiry: Shakespeare's wits made "more keen," or Cowper's "keen inquiry of her thought."
Checked 31 Oct 2026 · 4 facts
- Old English cēne already had meanings relating to learning and intelligence. en.wiktionary.org
- Keen descends from a Germanic adjective meaning knowledgeable and skillful, ultimately from a root meaning to know. en.wiktionary.org
- Shakespeare's A Lover's Complaint contains the wording about making wits more keen; the speaker is the young woman recounting her experience. internetshakespeare.uvic.ca
- Cowper's Table Talk contains the quoted phrase. en.wiktionary.org
- 3
Less common meanings
- 4Having a fine, sharp cutting edge or point.
The barber stropped the razor until its edge was perfectly keen.
Only a keen chisel will leave such clean lines in the oak.
Similarsharp, razor-sharp, honed
Note
It suits razors and knives, as in Macbeth's "keene Knife". Shakespeare also compares mocking tongues to a razor's edge, a figurative use that sits close to the sharp-minded meaning.
- 5
- 6
- 7To wail loudly and at length in grief for a dead person, or to utter such a wailing cry.
The women would keen at the graveside until their voices gave out.
She keened softly by the hearth as neighbors filed in to pay respects.
UsageOften keen for or over the dead person. Not related to keen meaning eager.
Note
Stuart Howard-Jones's comic poem Hibernia plays on the clash with the other keen, pretending to wonder whether the word means quick and lively before admitting that the language twists here. His mock gloss, which pictures rude songs sung to a dead body, is a joke, not a definition.
- 8
- 9Excellent or wonderful; very good.
Gee, what a keen car you've got parked out front!
Well our hosts here attacked us with a fantastic Dismodulating Anti Phase stun ray and then invited us to this amazingly keen meal by way of making it up to us.
1985, Douglas Adams, The Original Hitchhiker Radio ScriptsUsageOften in peachy keen, used today for a playful, retro feel.
Similarswell, neat, nifty, terrific, great
Note
Dated American praise, it still turns up in pop culture: Elton John's "Bennie and the Jets" (1973) uses it as high praise for a woman, and Douglas Adams's Hitchhiker radio scripts serve an "amazingly keen meal."
- 10Of prices or rates: set low enough to be strongly competitive.
The supermarket advertised keen prices to draw shoppers from its rivals.
Their quote was so keen that the council awarded them the contract.
UsageSaid of prices, rates and quotes, not the goods themselves: keen prices.
Similarcompetitive, low, attractive
Oppositesteep, high, exorbitant
- 11To make something cold, or to give it a fine, sharp edge.
This is the pureſt exerciſe of health, / The kind refreſher of the ſummer-heats; / Nor, when cold Winter keens the brightening flood, / Would I weak-ſhivering linger on the brink.
a. 1749 (date written), James Thomson, “Summer”Similarsharpen, hone, whet, chill
Note
A poet's verb, and a rare one, it takes an object: in The Seasons, James Thomson writes that "cold Winter keens the brightening flood." Its forms, keens, keened and keening, are spelled exactly like those of the unrelated verb meaning to wail. Context, not spelling, tells sharpening from wailing.
Checked 31 Oct 2026 · 4 facts
- James Thomson uses the quoted words in “Summer”, part of The Seasons. en.wiktionary.org
- The quotation reproduces Thomson's wording. en.wikisource.org
- Both verbs have the forms keens, keened and keening. en.wiktionary.org
- The wailing verb has a separate etymology from the sharpening verb. en.wiktionary.org
- 12Brave and courageous; bold and audacious in the face of danger.
Note
Courage is where the Old English word stood: cēne meant fierce, bold, brave and warlike, and Middle English kene still meant bold and brave. The sense is now obsolete. A modern reader will take "a keen captain" as eager rather than brave unless the setting is plainly old. The same Old English word also lies behind the sharp-witted sense.
Checked 31 Oct 2026 · 4 facts
- Old English cēne meant fierce, bold, brave and warlike. en.wiktionary.org
- Middle English kene meant bold and brave. en.wiktionary.org
- The brave or courageous sense of keen is obsolete. en.wiktionary.org
- The sharp-witted sense shares the same Old English ancestor. en.wiktionary.org
Showing meanings only.
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Origins
Old English cēne could mean keen, fierce, bold or brave, and also clever or wise. It became Middle English kene ("bold, brave, sharp") and goes back to Proto-Germanic *kōniz ("knowledgeable, skillful, clever") and finally to the Proto-Indo-European root *ǵneh₃-, "to know." German kühn ("bold, daring") is related, as are the English words cunning and can.
From Irish, meaning "to lament, keen."
Checked 31 Oct 2026 · 1 fact
- Keen, in its lamentation sense, derives from an Irish word meaning “to lament, keen.” en.wiktionary.org