noun
half-asleep; dozing; drowsy
Describes the state of being not fully awake, often just after waking or when falling asleep. Commonly used in the phrase 寝掛けに (while half-asleep).
寝掛けに電話が鳴って驚いた。
I was startled when the phone rang while I was half-asleep.
寝掛けの頭では難しい話は理解できない。
I can't understand complicated talk with a half-asleep mind.