The crossword solution for the term DECREASED FULLNESS OF is DEPLETED, which has 8 letters. DEPLETED is a verb that means to reduce or use up the supply of something, often gradually over time. This can refer to a physical object, such as a resource, or an abstract concept, such as energy or enthusiasm. In this case, it refers to a decrease in fullness, which could be a decrease in the amount of something, or a decrease in the intensity of something.