There are a variety of antonyms for the term "shootups," which denotes a sudden and rapid rise or increase in something. Some possible antonyms could include "decline," "fall," "drop," "plummet," "sink," or "slump." These terms describe a sudden and sharp decrease or decrease in something, such as the stock market, prices, or economic growth. Other antonyms for "shootups" might include "stagnation," "leveling off," or "plateau," which suggest a period of stability or little change. Whatever the context, antonyms for "shootups" generally refer to a contrasting state of affairs, one that is characterized by a decrease rather than an increase.