不眠不休 (ふみんふきゅう) Japanese meaning | KotomoraMeanings
1
noun, noun which may take the genitive case particle 'no'
without sleep or rest; working day and night
yojijukugo (four-character idiom)
Describes continuous effort or activity without sleeping or taking a break. Often used in contexts of intense work, study, or emergency response.
不眠不休の努力が実を結んだ。
Their tireless efforts bore fruit.