The antonyms for the word "stocks up" include "depletes," "reduces," "uses up," "depletes," "diminishes," and "lessens." All these words signify a decrease, reduction or depletion to what was originally available. The opposite concept of "stocks up" pertains to reducing or exhausting the supplies that one has, thus reducing the inventory or supplies. When businesses or households "stocks up" or increase their supplies, they are in a position to handle demand surges, uncertainties or emergency situations. Conversely, the depletion or reduction of stocks may lead to significant setbacks or even bankruptcy for businesses or households.