Knuckle down
Knuckle down verb - Work very hard, like a slave.
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Synonyms for Knuckle down
Operate and knuckle down are semantically related. In some cases you can use "Operate" instead a verb "Knuckle down".
Operate
Operate verb - To control the mechanical operation of.
Knuckle down and operate are semantically related. Sometimes you can use "Knuckle down" instead a verb "Operate".
Cite this Source
Operate and Knuckle down. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/knuckle_down/operate
Knuckle down & Operate. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/knuckle_down/operate>.
Operate or Knuckle down. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/knuckle_down/operate.
Google Ngram Viewer shows how "knuckle down" and "operate" have occurred on timeline