knuckle down

verb

knuckled down; knuckling down; knuckles down

intransitive verb

: to apply oneself earnestly

Examples of knuckle down in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Shi seemed confident that Strand Larsen, who was keen to join Newcastle United before the deadline, will knuckle down despite Wolves rejecting two bids. Steve Madeley, New York Times, 5 Sep. 2025 European countries need to knuckle down and increase their military capabilities while Russia is still dedicating a chunk of its forces to its invasion of Ukraine, Sweden's defense minister has said. Ellie Cook — Reporting From Prague, Czech Republic, MSNBC Newsweek, 3 Sep. 2025 There is every chance Pepi may decide to knuckle down and keep pushing De Jong, as PSV chase a successful defense of their title and progress in the Champions League. Jeff Rueter, The Athletic, 14 Jan. 2025

Word History

First Known Use

circa 1864, in the meaning defined above

Time Traveler
The first known use of knuckle down was circa 1864

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Cite this Entry

“Knuckle down.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/knuckle%20down. Accessed 9 Sep. 2025.

Kids Definition

knuckle down

verb
: to apply oneself in an earnest manner

More from Merriam-Webster on knuckle down

Last Updated: - Updated example sentences
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