Important matters are those issues or topics that have significant relevance, gravity, and impact on our lives. Some synonyms for important matters are crucial issues, critical topics, pressing concerns, essential subjects, major themes, vital affairs, significant matters, and pertinent topics. These synonyms indicate the importance of a topic or issue that demands serious attention and consideration. In any discussion, conversation, or debate, these synonyms can be used to emphasize the vital nature of the topic at hand. When discussing important matters, it's essential to be mindful of the significance they hold, and using appropriate synonyms can help reinforce their importance.