Apply and Knuckle down

Apply

Apply verb - To occupy (oneself) diligently or with close attention.
Usage example: Sam applied himself to writing thank-you letters to everyone who'd helped sponsor him for the charity walk

Knuckle down and apply are semantically related. in work hard topic. In some cases you can use "Knuckle down" instead a verb "Apply".

Knuckle down

Knuckle down verb - Work very hard, like a slave.
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Synonyms for Knuckle down

Apply and knuckle down are semantically related. Sometimes you can use "Apply" instead a verb "Knuckle down".

Both terms in one sentence

Cite this Source
Knuckle down and Apply. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/apply/knuckle_down
Apply & Knuckle down. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/apply/knuckle_down>.
Knuckle down or Apply. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/apply/knuckle_down.
Google Ngram Viewer shows how "apply" and "knuckle down" have occurred on timeline