bring on

Verb

bring on (third-person singular simple present brings on, present participle bringing on, simple past and past participle brought on)

1. (idiomatic, transitive) To cause.
   • Excessive drinking can bring on depression.
   • Does stress bring the headaches on?
2. (idiomatic, transitive, usually "bring it on") 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!1998 October, Steve Brodner, “Dubya!”, in Esquire, volume 130, number 4, page 106
   • 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.2011 January 8, Paul Fletcher, “Stevenage 3 - 1 Newcastle”, in BBC
3. (US, idiomatic, informal, intransitive, often) 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 belly1997 November 24, “The Judges May Have Done Foreman Favor”, in Richmond Times Dispatch, Virginia
   • Kevin Frey and Lucas Johnson stared back and gestured to bring it on.1998 March 13, “Bringing it on: Maine W. vs. New Trier”, in Chicago Tribune
4. (slang, transitive) To hire or initiate a new employee or participant in a project.
   • I'll bring them on at the end of the month.