adjective · faint, sparse, or flickering, especially used to describe lights late at night

众里寻他千百度，蓦然回首，那人却在，灯火阑珊处。

coming to an end or drawing to a close, often describing a season, mood, or activity

由于旅途劳累，大家早已意兴阑珊，不再讨论后续的行程。