今夜【こんや】
this evening, tonight
夜叉【やしゃ】
yaksha (Buddhist guardian deities sometimes depicted as demonic warriors)
夜中【よなか】
middle of the night, dead of night
夜中【やちゅう】
during the night, at night
夜中【よじゅう】
all night, the whole night
日夜【にちや】
day and night, around the clock, always, constantly
夜間【やかん】
night, nighttime
前夜【ぜんや】
last night, the previous night, night before (Christmas, etc.), eve (of festival, major event, etc.)
同夜【どうや】
the same night, that night
昼夜【ちゅうや】
day and night
通夜【つや】
all-night vigil over a body, wake
夜景【やけい】
night view, night skyline, nightscape
夜行【やこう】
walking around at night, night travel, night train
連夜【れんや】
every evening, night after night
前夜祭【ぜんやさい】
event held the night before another event, eve (of a festival) (e.g. Christmas Eve)
熱帯夜【ねったいや】
sultry night, sweltering night, night in which temperature doesn't fall below 25 degrees C
白夜【びゃくや】
night under the midnight sun, white night (at extreme latitudes), night during which the sun doesn't set
夜半【やはん】
midnight, dead of night
夜食【やしょく】
supper, night meal, late-night snack, "fourth meal", midnight snack
夜逃げ【よにげ】
running off in the night (to leave one's old life behind, e.g. to get away from debt), moonlight flit, skipping town overnight, upping and leaving under the cover of darkness, midnight vanishing act
