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Definition of Drift off
1. Verb. Change from a waking to a sleeping state. "He always falls asleep during lectures" 
Exact synonyms: Dope Off, Doze Off, Drop Off, Drowse Off, Fall Asleep, Flake Out, Nod Off
Specialized synonyms: Zonk Out
Antonyms: Wake Up
Specialized synonyms: Zonk Out
Antonyms: Wake Up



