nod off
• fall asleep, especially briefly or unintentionally.
• "he nodded off during the sermon"
Similar:
fall asleep,
go to sleep,
get to sleep,
doze off,
drop off,
go off,
drift off,
crash out,
flake out,
go out like a light,
conk out,
sack out,
zone out,
Opposite:
stay awake,
