When it comes to synonyms for the phrase "speaks loudly," there are plenty of different options to choose from. Some words that might be used to describe someone who consistently speaks at a high volume include "yells," "shouts," "screams," and "barks." Other options might include words like "proclaims," "announces," or "declares" for someone who tends to speak boldly and with great emphasis. No matter what adjective you choose, it's important to consider the tone and context of the speaker, as well as the intended audience or listener, when deciding on the most appropriate synonym to use.