There are many different synonyms for the word "brute". Some of the most common synonyms include "beast," "savage," "monster," "animal," "cruel," and "ferocious". Other synonyms can include "barbarian," "aggressor," "ruffian," and "bully". These words all describe someone who is rough and uncivilized, and who may lack the finer qualities of humanity. However, some of these words may have different connotations or levels of intensity, so it's important to choose the right synonym for the context in which it will be used. Overall, the many synonyms for "brute" provide a rich vocabulary of ways to describe someone who is violent, aggressive, or uncivilized.