"After sunset" is a phrase that refers to the timeframe immediately following the setting of the sun. Synonyms for this phrase include "dusk", which refers to the period when the sun is just below the horizon and the sky is gradually darkening, "twilight", which is the time when the sun is below the horizon but light still remains in the sky, and "evening", which is a general term for the time period between the end of the day and bedtime. Other synonyms include "nightfall", which is the moment when darkness begins to take over, and "crepuscule", which is a more poetic term for twilight that often implies a sense of tranquility and beauty.