Crescendo is a musical term used to describe a gradual increase in volume or intensity. However, in daily language, "rises to crescendo" is often used to describe a situation that builds up to a peak, whether emotional or physical. The antonyms for crescendo, then, would encompass a decline, a sudden stop, or a lack of intensity. Words like decrease, ebb, wane, and fade could all work to counteract the idea of a crescendo. If the metaphorical rise to crescendo is interrupted, words like cessation, interruption, or discord could be appropriate antonyms. Overall, the antonyms for "rises to crescendo" are words that suggest a lack of buildup, climax, or resolution.