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.
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 under get a move on.
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.
get crackingact quickly and energetically. informal
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.
imperative Get moving!; Get started!; Hurry up! Hurry up! Get cracking!
See also: get