Deflates is an action that describes the process of reducing or decreasing something in size, strength, or intensity. Synonyms for deflates include flattens, decreases, diminishes, lowers, drains, lessens, weakens, and debilitates. These words all indicate a reduction in the amount or level of something. For instance, a person deflating a balloon using a needle could be substituted with a person flattening the balloon. Alternatively, if a bubble gum loses its taste, it can be said to deflate, drain or weaken in flavor. In essence, any verb that suggests a reduction in the level of something can be substituted for deflates.