Knuckle down
Knuckle down verb - Work very hard, like a slave.
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Synonyms for Knuckle down
Settle down and knuckle down are semantically related. In some cases you can use "Settle down" instead a verb "Knuckle down".
Settle down
Settle down verb - To become still and orderly.
Knuckle down and settle down are semantically related. Sometimes you can use "Knuckle down" instead a verb "Settle down".
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Settle down and Knuckle down. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/knuckle_down/settle_down
Knuckle down & Settle down. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/knuckle_down/settle_down>.
Settle down or Knuckle down. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/knuckle_down/settle_down.
Google Ngram Viewer shows how "knuckle down" and "settle down" have occurred on timeline