ふ
不
みん
眠
ふ
不
きゅう
休

noun, takes genitive case の

Messages.yoji.
  1. no sleep or rest, working day and night.

Variations

Pronunciation Kanji Kana Is Common
ふ
不
みん
眠
ふ
不
きゅう
休
 不眠不休 ふみんふきゅう

Contained Kanji Breakdown

negative, non-, bad
フ (4th, N4)
cliff (厂) variant
divining, fortune-telling, divination or katakana to radical (no. 25)
ボク　うらな.う　うらない (Kentei Pre-1)
sleep, die, sleepy
ねむ.る　ミン　ね (7th, N3)
eye, class, look
め　モク　ボク (1st, N4)
people, nation, subjects
ミン　たみ　ひと (4th, N3)
family name, surname, clan
シ　うじ (4th, N1)
rest, day off, retire
やす.む　キュウ (1st, N5)
human radical (no. 9)
tree, wood
き　モク　こ- (1st, N5)