Her smile lit up the gloomy room.
Meaning: This means the smile made the room feel more cheerful and bright.
Choice of Words: Lit up is a phrasal verb that means to become bright or full of light. Gloomy is an adjective that describes a place or situation that is dark, sad, or depressing. When you put them together, "Lit up the gloomy room" means that the smile made the room feel brighter and happier.
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Related Expressions