Big rushes can be described as fast movements or surges of energy. Antonyms for this term would be slow or steady movements or a calming effect. For example, instead of big rushes, one could experience a slow and peaceful flow, a gentle breeze, or a gradual increase in activity. These antonyms could be used in a variety of contexts, such as describing the flow of a river, the pace of a workout, or the energy level of a social gathering. Emphasizing the opposite of big rushes can add a sense of tranquility and balance to a description or situation.