drift off From WikiWord, the free dictionary 🔊 listen English Contents DefinitionsRelated wordsReferences DefinitionsverbTo fall asleep slowly.To lose concentration. Related wordsSynonymsnod offflake outdrop offdoze offfall asleepdope offdrowse offdrive offdriftslide offsnooze offride offfall offoverdrifttaper offdrive away References Wiktionary — drift off Wikipedia — drift off