Quiesce is a term that refers to a state of inactivity or quietness. The opposite of quiesce could be described using words like agitate, disturb, or disrupt. These words refer to a state of activity, noise, or disturbance. Antonyms for quiesce might include words like stir, awaken, rouse, or activate. These words describe a state of movement, noise, or action. Other antonyms for quiesce might include words like animate, excite, or energize. These words suggest the opposite of calm and suggest instead a state of excitement or enthusiasm. Ultimately, antonyms for quiesce are words that describe states of activity and movement, rather than stillness or quietness.