addormentarsi bedeutet auf Englisch

drop off▼(to fall asleep)
verb
[UK: drɒp ɒf] [US: ˈdrɑːp ˈɒf]

drowse [drowsed, drowsing, drowses]▼(to be sleepy and inactive)
verb
[UK: draʊz] [US: draʊz]

fall asleep▼(to pass into sleep)
verb
[UK: fɔːl ə.ˈsliːp] [US: ˈfɑːl ə.ˈsliːp]

nod [nodded, nodding, nods]▼(gradually fall asleep)
verb
[UK: nɒd] [US: ˈnɑːd]

nod off▼(fall asleep)
verb
[UK: nɒd ɒf] [US: ˈnɑːd ˈɒf]

get off▼(to fall asleep)
verb
[UK: ˈɡet ɒf] [US: ˈɡet ˈɒf]