"Rises in arms" is a phrase which refers to the act of taking up arms in protest or rebellion against an authority. There are numerous synonyms that can be used to describe this action, including "takes up arms," "rebel," "insurrects," "revolts," "mutinies," "uprises," and "revolts." Each of these words connotes a sense of unrest and resistance, and suggests a willingness to stand up for one's beliefs, even if it means engaging in armed conflict. Regardless of the term used, the underlying message is clear: rising in arms is a powerful and often necessary response to oppression and injustice.