When you want to express yourself more assertively, it's common to say "raise your voice". However, this phrase can sometimes carry a negative connotation, implying yelling or anger. If you're looking for alternative ways to convey a similar message, consider some of these synonyms: speak up, assert yourself, express yourself more firmly, be assertive, make yourself heard, stand up for yourself, let your voice be heard. Each of these alternatives can be used in slightly different situations, depending on your intention and the context of the conversation, but they all share the common goal of empowering yourself and communicating more effectively.