There are many synonyms for the phrase "braces up," which means to prepare oneself for a difficult situation or to gather one's courage. Some common alternatives include "buckles down," "gets ready," "steadies oneself," "girds one's loins," "prepares oneself," "takes a deep breath," and "psyches oneself up." Each of these phrases implies an action the individual must take in order to face a challenge with confidence, whether that means mentally preparing oneself or physically getting into a ready position. Using synonyms for "braces up" can help expand one's vocabulary and convey a precise meaning in writing or conversation.