Knuckle down
Knuckle down verb - Work very hard, like a slave.
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Synonyms for Knuckle down
Slaves and knuckle down are semantically related. In some cases you can replace term "Slaves" with "Knuckle down", this verbs are similar.
Slaves
Knuckle down and slaves are semantically related. Sometimes you can use "Knuckle down" instead a verb "Slaves".
Cite this Source
Slaves and Knuckle down. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/knuckle_down/slaves
Knuckle down & Slaves. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/knuckle_down/slaves>.
Slaves or Knuckle down. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/knuckle_down/slaves.
Google Ngram Viewer shows how "knuckle down" and "slaves" have occurred on timeline