get up (one's) nerve (to do something)
(redirected from get up nerves)get up (one's) nerve (to do something)
To muster or draw upon one's courage or resolve to do something. I wanted to ask Mary Sue to the prom, but I never got up the nerve. I hope Jonathan finally gets up his nerve to ask his boss for a raise.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.