昼夜(ちゅうや)

ちゅうや
noun
day and night
1. day and night, around the clock
Daytime and nighttime together, often implying continuous activity without rest. Used to emphasize that something goes on without stopping.
昼夜(ちゅうや)を問(と)わず働(はたら)く。
To work regardless of day or night.
工場(こうじょう)は昼夜(ちゅうや)交代(こうたい)で稼働(かどう)している。
The factory operates in day and night shifts.
被災地(ひさいち)では救助(きゅうじょ)隊(たい)が昼夜(ちゅうや)を問(と)わず捜索(そうさく)活動(かつどう)を続(つづ)けている。
In the disaster-stricken area, rescue teams continue search operations around the clock.

USAGE:
Often used in the set phrase 昼夜(ちゅうや)を問(と)わず (regardless of day or night). Also used as a modifier: 昼夜(ちゅうや)交代(こうたい) (day-night shift rotation), 昼夜(ちゅうや)逆転(ぎゃくてん) (reversed sleep schedule). A formal word; in casual speech, 朝(あさ)から晩(ばん)まで is more common.

COMMON COLLOCATIONS:

  • 昼夜(ちゅうや)を問(と)わず: regardless of day or night
  • 昼夜(ちゅうや)交代(こうたい): day-night shift
  • 昼夜(ちゅうや)逆転(ぎゃくてん): reversed day-night cycle
  • 昼夜(ちゅうや)兼行(けんこう): marching day and night

SIMILAR WORDS:

  • 日夜(にちや): day and night (similar, slightly more common)
  • 終日(しゅうじつ): all day long
general
Added 2026.2.23 14:11
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