無む断だん外がい泊はく

noun, noun or participle which takes 'suru'

staying out overnight without notice; unauthorized overnight stay

Used when someone stays away from home or a facility overnight without permission or prior notice. Often used in contexts like dormitories, hospitals, or family rules.

• 寮りょうでは無む断だん外がい泊はくは禁きん止しされている。

  Staying out overnight without permission is prohibited in the dormitory.

• 彼かれは親おやに無む断だん外