to fall asleep
81doze off — fall asleep, snooze, rest …
82go out like a light — fall asleep immediately; lose consciousness, faint …
83conk out — fall asleep quickly with great fatigue As soon as we returned from the hike I conked out in front of the TV …
84out like a light — fall asleep very quickly I was out like a light when I went to bed last night …
85zonk out — fall asleep very quickly As soon as I got home last night I immediately zonked out …
86drop off — fall asleep, especially without intending to. → drop …
87drop off — Fall asleep …
88Narcolepsy — For other uses, see Narcolepsy (disambiguation). Narcolepsy Classification and external resources ICD 10 G47.4 ICD 9 …
89Insomnia — This article is about the sleeping disorder. For other uses, see Insomnia (disambiguation). Insomnia Classification and external resources ICD 10 F51.0, G47.0 …
90Delayed sleep phase syndrome — Classification and external resources ICD 10 G47.2 ICD 9 327.31 …