cap off(redirected from capping it off)
To finish something, often in a particularly good or bad way. A noun or pronoun can be used between "cap" and "off." Come on, we need to throw one last party to cap off our senior year! And then, to cap the terrible evening off, the waiter dropped my dinner in my lap!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.