noun, noun which may take the genitive case particle 'no'
without rest; nonstop work
Often used in set phrases like 不眠不休 (without sleep or rest) or 不休で働く (work without a break).
See also: 不眠不休
彼らは不眠不休で救助活動を続けた。
They continued the rescue operation without sleep or rest.
この仕事は不休で取り組まなければならない。
This work must be tackled without a break.