"Making waves" is a common phrase used to describe someone who is causing a stir, making an impact or creating change. Its antonyms, on the other hand, portray a more passive or stagnant state of being. Antonyms for "making waves" may include being quiet, complacent, unremarkable, or settling for the status quo. Another alternative may be conforming or blending in. While making waves can be a positive quality ,sometimes it can also lead to confrontation or controversy. Thus, antonyms may describe someone who is easy-going, peaceful, or not interested in rocking the boat.