nadir

nadir
[ˈneɪdɪə, ˈnadɪə]
noun
[in sing.]
  1. the lowest point in the fortunes of a person or organization
    最低点;最不幸的时刻
    the 1420s marked the nadir of French for- tunes.
    15世纪20年代是法国最不幸的时期。
    ■(Astronomy)the point on the celestial sphere directly below an observer
    (天文)天底。 zenith. 的反义词
语源
  1. late Middle English (in the astronomical sense): via French from Arabic naẓīr (as-samt) 'opposite (to the zenith')
英语宝典
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