fall asleep

• Empezar a dormir; pasar al estado de sueño de forma natural o involuntaria.

To begin sleeping; to enter a state of sleep naturally or unintentionally.

1. Begin to sleepA2formal

   To start sleeping; to enter a state of sleep.

   quedarse dormido

   • She fell asleep while reading a book.
   • He fell asleep on the sofa after dinner.
   • I always fall asleep quickly after a long walk.