Get cracking!

get cracking

To start working on something. Often used as an imperative. Get cracking, or you'll be up all night working on your book report! Let's get cracking—I don't want to spend all day cleaning out the garage.
See also: cracking, get
Farlex Dictionary of Idioms.

get cracking

Rur. to get to work. If you want to finish that quilt by Labor Day, you best get cracking. Sit down to your homework and get cracking!
See also: cracking, get
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

get cracking

see under get a move on.
See also: cracking, get
The American Heritage® Dictionary of Idioms by Christine Ammer.

get cracking

INFORMAL
If you get cracking, you start doing something immediately and quickly. I realised that if we got cracking, we could make the last 700 miles to St Lucia within our deadline. I promised to get cracking on the deal.
See also: cracking, get
Collins COBUILD Idioms Dictionary, 3rd ed.

get cracking

act quickly and energetically. informal
See also: cracking, get
Farlex Partner Idioms Dictionary

get ˈcracking

(informal) start doing something quickly: We’ll have to get cracking with the painting if we want to be finished by Friday. There’s an awful lot to do, so let’s get cracking.
See also: cracking, get
Farlex Partner Idioms Dictionary

Get cracking!

imperative Get moving!; Get started!; Hurry up! Hurry up! Get cracking!
See also: get
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • get cracking
  • get on the stick
  • working
  • be working overtime
  • overtime
  • working girl
  • off duty
  • on/off duty
  • nine-to-five job
  • fringe