Barbarousness is a term used to describe behavior that is perceived as cruel, savage or uncivilized. There are various synonyms for this word that can be used to express similar meanings. Some of the synonyms are barbarism, primitiveness, brutality, inhumanity, ferocity, and savagery. These terms are commonly used in literature and everyday language to describe horrific acts of violence, mistreatment, and cruelty. The use of these synonyms makes it possible to convey the depth of emotional pain, suffering, and shock caused by actions that go against the principles of humanity. Therefore, it is important to use these words with care and consideration for their impact on the reader.