crack on

verb cracks on · cracking on · cracked on

1. informal, intransitive To continue (at a task) briskly or promptly. Naked Twister will have to wait. I've got to crack on with my essay.
2. informal, intransitive To continue apace. The project is really cracking on.
3. dated, transitive To put on. to crack on more sail, or more steam
4. slang, transitive To crack down on or arrest (someone). They need to crack on those drug dealers.