There are several synonyms for the phrase "bear it." One common synonym is "endure," which means to suffer through a difficult situation without giving up. Another synonym is "tolerate," which means to put up with something that is unpleasant or challenging. "Sustain" is another synonym, which refers to the ability to continue through difficult times or to keep something going. "Accept" is a synonym that implies a willingness to take on a challenging situation without complaint or resistance. Other synonyms include "carry on," "persevere," "withstand," and "brave." No matter which synonym is used, it is clear that "bearing it" refers to the strength and resilience required to face life's challenges.