keen
1 Americanadjective
-
keener,
comparative
-
keenest
superlative
-
finely sharpened, as an edge; so shaped as to cut or pierce substances readily.
a keen razor.
- Antonyms:
- dull
-
sharp, piercing, or biting.
a keen wind;
keen satire.
-
characterized by strength and distinctness of perception; extremely sensitive or responsive.
keen eyes;
keen ears.
- Synonyms:
- acute, penetrating, piercing
-
having or showing great mental penetration or acumen.
keen reasoning;
a keen mind.
-
animated by or showing strong feeling or desire.
keen competition.
-
intense, as feeling or desire.
keen ambition;
keen jealousy.
-
eager; interested; enthusiastic; (often followed by about, on, etc., or an infinitive).
She is really keen on going swimming.
noun
-
keens
plural
verb (used without object)
-
keens,
present (3rd person singular)
-
keened,
past participle, past
-
keening
present participle
verb (used with object)
-
keens,
present (3rd person singular)
-
keened,
past participle, past
-
keening
present participle
adjective
-
eager or enthusiastic
-
fond (of); devoted (to)
keen on a girl
keen on golf
-
intellectually acute
a keen wit
-
(of sight, smell, hearing, etc) capable of recognizing fine distinctions
-
having a sharp cutting edge or point
-
extremely cold and penetrating
a keen wind
-
intense or strong
a keen desire
-
extremely low so as to be competitive
keen prices
-
slang very good
verb
noun
Usage
What does keen mean? Keen commonly means eager, interested, or enthusiastic. This sense of the word is often followed by about or on and the particular interest, as in He’s very keen on music. More generally, keen means sharp, intense, or strong. It can be used to mean sharp in a literal way, as in a keen blade. It can also be used in several figurative ways. A keen sense of smell is one that’s very strong and perceptive. A keen intellect is one that’s sharp in the sense of being mentally strong. A keen desire is an intense one. A keen satire and a keen wind are both piercing and biting—they both sting. The word keen can also be used as a slang term meaning wonderful or splendid, and this is how it’s used in the phrase peachy keen, which is used as an informal and playful way to describe something as excellent or wonderful. Example: He showed keen jealousy over my keen knife.
Synonym Usage
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Adjectives
Participles
Conjugated Forms
Present
-
keensimple
-
keenssimple
-
have keenedperfect
-
has keenedperfect
-
am keeningprogressive
-
are keeningprogressive
-
is keeningprogressive
-
have been keeningperfect progressive
-
has been keeningperfect progressive
Past
-
keenedsimple
-
had keenedperfect
-
was keeningprogressive
-
were keeningprogressive
-
had been keeningperfect progressive
Future
Etymology
Origin of keen1
First recorded before 900; 1930–35 keen 1 for def. 8; Middle English kene, Old English cēne; cognate with German kühn, Old High German chuoni “bold,” Old Norse kœnn “wise, skillful”
Origin of keen2
First recorded in 1780–90 for the verb; from Irish caoin-, stem of caoinim “(I) lament”; noun derivative of the verb
Explanation
If you have a keen interest in something, you are really, really into it. Keen is an adjective that describes something that is intense, sharp, or focused. The word keen comes from the Old English word cene that translates to "bold and brave" and while the spelling is now really different, the sounds are similar. Variations of keen as being "bold" and "strong" show up in other languages, but only English has the meaning of "sharp" — relating to "an edge or blade." Keen has a lot of close — and brutal — synonyms, such as caustic, cutting, piercing, and penetrating. It can also be used as a verb to mean "express grief or pain out loud."
Vocabulary lists containing keen
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Unit 1: Telling Details
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
For those who have watched Hartnett grow throughout his career, the actor’s keen yet unassuming abilities surely don’t come as a shock.
From Salon ● Oct. 9, 2026
"Why would you scrabble for the shield, and then be keen to give it away?" she asked.
From BBC ● Oct. 8, 2026
She was greeted warmly and it did not look like a fanbase who were keen to push her out of the door.
From BBC ● Oct. 4, 2026
Andrew Jones is an keen triathlete but chasing those triathlon dreams has also meant running the risk of getting ill.
From BBC ● Oct. 4, 2026
Till this moment, I had been so intent on watching them, their appearance and conversation had excited in me so keen an interest, I had half-forgotten my own wretched position: now it recurred to me.
From "Jane Eyre" by Charlotte Brontë
Dr Caulfield said she was "delighted” to see Róis “proudly performing her keens to full houses, with no shame or stigmatisation involved, just audiences loving her bravery and skill".
From BBC ● Dec. 31, 2025
Benjamin Wallfisch’s score keens and groans ominously, sometimes dipping into synthy electronic moments.
From Los Angeles Times ● Aug. 14, 2024
Behind the action a stringed instrument keens in a low register and a piano riff trembles in a gentle minor key.
From Salon ● Jan. 3, 2021
She’s got a beaten-up suitcase at her feet and keens softly into her lap.
From Seattle Times ● Aug. 14, 2019
“This is the thing my blood keens for—to protect something worth protecting.”
From "Impossible Creatures" by Katherine Rundell
When it comes to courting the EU, Canada appears to some to be even keener than one of the bloc's closest neighbours.
From BBC ● Sep. 15, 2026
And keener senses tend to make for more consequential experiences.
From Los Angeles Times ● Apr. 22, 2026
Dior designer Jonathan Anderson appeared keener than most to take some risks.
From Barron's ● Jan. 25, 2026
The magic is unique and often biological—many characters have mental or physical enhancements that give them perfect memory or keener senses.
From The Wall Street Journal ● Dec. 12, 2025
The children, whose nighttime vision was evidently far keener than her own, seemed to be busy arranging something at her feet.
From "The Unseen Guest" by Maryrose Wood
When Donald Trump speaks, financial traders are among the keenest listeners.
From BBC ● Aug. 4, 2026
The event was hosted by Wendy Cutler, a veteran American trade negotiator and one of Washington’s keenest observers of Asian trade policy.
From The Wall Street Journal ● Apr. 21, 2026
Among the candidates for Fed chairman, Kevin Warsh seems keenest to abandon the current regime.
From The Wall Street Journal ● Dec. 18, 2025
For our money, Jim is both the funniest and keenest politics writer in the United States—which is to say, readers, your long national nightmare is over!
From Slate ● Aug. 30, 2025
I have the keenest sense of deja vu.
From "The Girl on the Train" by Paula Hawkins
Amid the nonstop drumbeat of hundreds of feet walking together, bagpipes keened, striking an appropriately dignified tone.
From Los Angeles Times ● Sep. 19, 2022
But whether the wind produced a lion’s roar, or merely keened or whistled or hummed, at its peak it was clocked by the National Weather Service at Reagan National Airport at 29 mph.
From Washington Post ● Feb. 29, 2020
Well, the souls howled and keened, as distressed souls are known to do, since they understood that a garden that nobody visited was not worth cultivating.
From The New Yorker ● Apr. 22, 2019
The metal structure keened its mournful note again.
From The Guardian ● Mar. 18, 2013
But the way they keened their beaks forward and menacingly opened their wings made them look as though they might.
From "The Girl Who Drank the Moon" by Kelly Barnhill
The keening chorus is anchored by Roger Troutman, who enjoyed a series of 1980s hits with sprays of talk-box-warped vocals, while the blasting beat was produced by Dr. Dre, the chief architect of G-funk.
From The Wall Street Journal ● Aug. 21, 2026
Gilgamesh’s lament is not the stylized keening of epic tradition—not Achilles’ highfalutin howls after Hector strikes down Patroclus—but something rawer, humbler, more recognizably human.
From The Wall Street Journal ● Apr. 24, 2026
Only a handful of authentic keening songs were recorded from traditional singers, which Róis referenced on the record.
From BBC ● Dec. 31, 2025
Mr. Sonnier’s virtuoso accordion work and his vocals, by turns keening and supple, infused the country airwaves in the late 1980s with Cajun, rock, swamp-pop and jazz sensibilities.
From New York Times ● Jan. 26, 2024
Wind whistled through the bare rocks with a lonely, keening sound.
From "The House of the Scorpion" by Nancy Farmer
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
