keen
adjective
finely sharpened, as an edge; so shaped as to cut or pierce substances readily.
keenest
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superlativeof keen.superlative
The form of an adjective or adverb indicating the greatest degree of a quality.
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.
Tennis is a sport that rewards our keenest attention.
From The Wall Street Journal ● Aug. 3, 2026
But niche pleasures, for those who partake in them, are often the keenest.
From The Wall Street Journal ● Nov. 28, 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
Among the keenest observers of the test flights in Texas is Nasa.
From BBC ● Jun. 6, 2024
Her keenest attention was awakened; she longed to hear more, and was grateful to her uncle for saying:
From "Pride and Prejudice" by Jane Austen
