bring on

verb

1. To cause.

   “Excessive drinking can bring on depression.”

2. To make something appear, as on a stage or a place of competition.

   “The impatience here is palpable: 2000, here we come! Bring on Gore! Bring em all on!”

   “Stevenage's first-half performance forced a change of formation from Newcastle at the break, as they brought on Nile Ranger for Leon Best and switched to a 4-2-3-1 set-up.”

3. To pose a challenge or threat; to attack; to compete aggressively.

   “Not that Briggs was capable of bringing it on. He got in, maybe, one really good shot: a right to Foreman's ample belly”

   “Kevin Frey and Lucas Johnson stared back and gestured to bring it on.”

4. To hire or initiate a new employee or participant in a project.

   “I'll bring them on at the end of the month.”