The term SHINE SOFTLY can be broken down into two crossword solutions: SHIMMER (7 letters) and GLOW (4 letters). SHIMMER is an intransitive verb that means to shine with a soft, tremulous light. It is often used to describe the light of stars or fireflies. GLOW is an intransitive verb that means to emit a steady, gentle light. It is often used to describe the light of a candle or a fire. Together, these two words describe a soft, gentle light that is both shimmering and glowing.