noun
disturbance of sleep; sleep disruption
Refers to anything that prevents or interrupts peaceful sleep, such as noise, light, or a late-night nuisance. Often used in complaints or humorous contexts.
隣の部屋の騒音が安眠妨害だ。
The noise from the next room is a disturbance of my sleep.
夜中の電話は安眠妨害
A phone call in the middle of the night is nothing but a sleep disruption.