We found 2 dictionaries that define the word fell asleep:

General (2 matching dictionaries)

1. fell asleep: Vocabulary.com
2. fell asleep: Wiktionary

Opposite: woke up, became alert Phrases: fell asleep from pain, more... ▸ Words similar to fell asleep ▸ Usage examples for fell asleep ▸ Idioms related to fell asleep ▸ Wikipedia articles (New!) ▸ Words that often appear near fell asleep ▸ Rhymes of fell asleep ▸ Invented words related to fell asleep