the worst moment of a particular situation最糟糕的时刻；最低点- the nadir of his career他事业上的低谷
- Company losses reached their nadir in 2009.2009 年公司的亏损达到了最严重的程度。🔊🔊
opposite zenithWord Originlate Middle English (as an astronomical term): via French from Arabic naẓīr (as-samt) ‘opposite (to the zenith)’.