The term 'Getting Lighter' can be summarized by the crossword solution 'FADING, ' which is a 6-letter word. FADING is a process in which something gradually becomes less intense, visible, or vivid over time. This could refer to a variety of things, such as a color FADING from a fabric, a sound becoming quieter, or a memory becoming less clear. In this context, it could refer to the light of day getting lighter as the sun sets.