Knuckle down
Knuckle down verb - Work very hard, like a slave.
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Synonyms for Knuckle down
Zero and knuckle down are semantically related. In some cases you can use "Zero" instead a verb "Knuckle down".
Zero
Zero verb - Adjust (an instrument or device) to zero value.
Knuckle down and zero are semantically related. Sometimes you can use "Knuckle down" instead a verb "Zero".
Nearby Words: zeroed, zeroing
Cite this Source
Zero and Knuckle down. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/knuckle_down/zero
Knuckle down & Zero. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/knuckle_down/zero>.
Zero or Knuckle down. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/knuckle_down/zero.
Google Ngram Viewer shows how "knuckle down" and "zero" have occurred on timeline