The term "over supply" refers to an excess or surplus of a particular product or resource. The antonyms for this term are "scarcity," "shortage," and "deficit," which denote a lack or insufficiency of the same. These antonyms depict situations where the demand for a product or resource exceeds its supply, resulting in a dearth that can lead to price hikes, rationing, and other negative effects on the economy. In contrast, the over-supply of a commodity can lead to a drop in its price due to the reduced demand, which can negatively impact the producers and suppliers of that commodity.