apply oneself, try hard, labor, set to work; see apply (oneself), concentrate 2, work 1.
"knuckle-down." YourDictionary, n.d. Web. 18 December 2018. <https://thesaurus.yourdictionary.com/knuckle-down>.
knuckle-down. (n.d.). Retrieved December 18th, 2018, from https://thesaurus.yourdictionary.com/knuckle-down
Yes, I'd like to receive Word of the Day emails from YourDictionary.com
By continuing, you agree to our
Please set a username for yourself.
People will see it as Author Name with your public flash cards.