Buckle down
Meaning: to settle down to something; to begin to work seriously at something, to start working hard
Example: I must buckle down to some work this afternoon. If you don't buckle down to your job, you'll be fired. You had better buckle down and get busy.
Movies and series with multiple subtitles at once. +1 month free 🚀
Example: I must buckle down to some work this afternoon. If you don't buckle down to your job, you'll be fired. You had better buckle down and get busy.