Nighttime
来自Big Physics
Old English neaht, niht, of Germanic origin; related to Dutch nacht and German Nacht, from an Indo-European root shared by Latin nox and Greek nux .
wiktionary
From Middle English nyght tyme, nyȝttyme, equivalent to night + time. Compare Dutch nachttijd, German Nachtzeit, Danish nattetid, Swedish nattetid. Compare also Middle English nyȝter tyme(“nighttime”), from Old Norse náttartími, nætrtími(“nighttime”).
