Nadir
WordNet
noun
(1) The point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected
(2) An extreme state of adversity; the lowest point of anything
WiktionaryText
Etymology
Unknown. It has been suggested that it is from , nazīr, rare, trivial, but if it is Arabic, perhaps more likely would be , naḍīr auspicious, boding well (?)
Represents the word 'rare' in hebrew