(intr, adverb + preposition) to accept (an unpleasant fact, reality, etc)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Other Idioms and Phrases with face up to
Also, face it. Confront or accept an unpleasant or difficult situation. For example, Jane had to face up to the possibility of being fired, or Face it—you were wrong. [Late 1700s] Also see face the music.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.