Unhumanly is a word that is used to describe something that is inhumane or lacking human qualities. There are many synonyms for this word, including inhuman, brutal, atrocious, barbaric, cruel, heartless, merciless, savage, and vicious. These words convey a sense of cruelty and lack of empathy towards others, and can be used to describe both actions and personality traits. When describing someone as unhumanly, it is important to choose the right synonym to accurately convey the severity of their behavior or attitude. By using one of these synonyms, you can effectively communicate your message and emphasize the importance of treating others with kindness and respect.