wane

衰退、減弱、消退

His interest in the sport waned after the injury.

受傷之後，他對這項運動的興趣就逐漸減退了。

虧缺、漸虧指月亮

The moon was waning, so the night grew darker.

月亮正在虧缺，夜色因此愈來愈暗。

衰退、衰微多用於 on the wane

Support for the new policy is clearly on the wane.

民眾對新政策的支持明顯正在衰退。

月虧、虧缺期天文

Farmers once planted according to the wane of the moon.

農民以前會依照月虧的時節來耕種。