brave it out 1
Face danger or a difficult situation with courage. For example, They had far fewer votes than the opposition, but they decided to brave it out. [Late 1500s]
2
Also, brazen it out. Boast or swagger, act with impudent bravado. For example, They hadn’t been invited but decided to stay and brazen it out. [Mid-1500s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.