expression:

• sleep four hours and pass, sleep five hours and fail (when cramming for university entrance exams) - four character idiom

expression / adverb:

• without sparing time for sleep

noun:

• first stage of sleep

noun:

• place to sleep

noun:

• lonesome sleep; sleeping alone

noun:

• sleep-talking; nonsense ➜ 寝言【ねごと】

noun:

• disturbance of sleep; nuisance in the middle of the night

noun / ~の noun:

• deep sleep; torpor

noun / ~する noun:

• eternal sleep; death

godan ~る verb:

• to work without sleep or rest - after Yukio Edano, Chief Cabinet Secretary during the 2011 earthquake - slang

godan ~う verb:

• to miss a chance to sleep; to be wakeful

expression / godan ~る verb:

• to sleep in peace; to sleep without fear

noun / ~する noun:

• feigned sleep; playing possum

noun:

• non-REM sleep

ichidan verb / intransitive verb:

• to get enough sleep - usu. neg.

expression / ichidan verb:

• to disturb one's sleep

ichidan verb / transitive:

• to lull (a child) to sleep; to put a person to sleep

yodan ~る verb (archaic):

• to sleep - archaism - honorific language

noun / ~する noun:

• catching up on one's sleep; storing up sleep; getting extra sleep while one has the chance

expression / godan ~ぶ verb:

• to sleep; to fall asleep

noun / ~する noun:

• feigned sleep; playing possum

noun:

• perspiration given off during sleep; sweating while sleeping; night sweats

noun:

• cold sleep; suspended animation

expression / godan ~う verb:

• to induce sleep; to cause drowsiness

noun:

• oiled multi-layered paper sheet used to sit or sleep on (during the summer); oiled-paper cushion; wax-cloth