When it comes to expressing displeasure or frustration, there are many different ways to say that someone is "getting angry." Some possible synonyms include "loses their temper," "flies off the handle," "gets irate," "becomes enraged," "blows a fuse," "flares up," "boils over," "seethes," "becomes incensed," "gets worked up," and "becomes impassioned." Each of these phrases conveys a slightly different shade of meaning, but all describe a state of heightened emotion and intense frustration. Whether you use one of these synonyms or stick with the straightforward "gets angry," it's important to remember that emotions are complex and nuanced, and can be difficult to express in words.