The phrase "don't make waves" is often used to encourage people to avoid causing trouble or controversy. However, there are many antonyms for this phrase that encourage people to speak up and take action. Some possible antonyms include "make a difference," "shake things up," "stand up for what you believe in," and "rock the boat." These phrases encourage people to take a more proactive approach to problem-solving and to stand up for their beliefs, even if it means causing some discomfort or controversy. By embracing these antonyms, people can become agents of positive change and help create a better world for all.