The term "barbary beast" is a derogatory term commonly used to describe someone who is wild, savage or aggressive. However, there are plenty of synonyms that could be used instead of this derogatory term that do not carry any insulting connotations. These synonyms include "ferocious animal", "wild predator", "savage monster" or simply just "wild animal". If we want to describe a person as aggressive instead of using the word "beast", we could use phrases such as "hot-headed", "temperamental" or "volatile". It is important to choose our words carefully to avoid negative stereotypes and derogatory terms.