The term 'disappearing' can be described by a variety of words, including DISSIPATING (11 letters), PASSING (7 letters), FLYING (6 letters), DYING (5 letters), DECLINING (9 letters), DEPARTING (9 letters), EBBING (6 letters), and VANISHING (9 letters). Each of these words describes the process of something disappearing, whether it is a physical object, an emotion, or a feeling. For example, DISSIPATING implies that something is gradually fading away, while PASSING suggests that something is quickly moving on. Similarly, FLYING implies that something is quickly leaving, while DYING implies that something is slowly fading away. DECLINING, DEPARTING, EBBING, and VANISHING all suggest that something is gradually leaving or fading away.