knuckle down

1. 1.

   work very hard, like a slave

   Synonymsslavebreak one's backbuckle down

   Broaderwork

Questions about knuckle down

What does knuckle down mean?

knuckle down means "work very hard, like a slave".

What is another word for knuckle down?

Close synonyms include slave, break one's back, buckle down. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.