na·dir
noun/ˈneɪdɪə(r)/
/ˈneɪdɪr/
[singular] (formal)- 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。
Word Originlate Middle English (as an astronomical term): via French from Arabic naẓīr (as-samt) ‘opposite (to the zenith)’. - the nadir of his career