Antonyms for the word "quiescencies" would be words that express movement, activity, or agitation. Examples could include words such as energy, motion, excitement, or turbulence. These words all connote the opposite of stillness or quietness, and instead suggest a sense of movement or restlessness. Other potential antonyms for "quiescencies" might include tension, unrest, agitation, or stimulation. By using these words in contrast with "quiescencies," it is possible to highlight the dichotomy between tranquility and activity, and to emphasize the importance of each in its own context.