Meaning of flake out | Babel Free

Definitions

1. To fall asleep from exhaustion or intoxication; to lie down.
   informal, intransitive
2. To flake or be flaky: to prove unreliable; to abandon or desert someone.
   informal, intransitive
3. To crack up or break down; to have a mental episode; to behave eccentrically.
   intransitive, slang

Examples

“John said he could drive me to the airport, but then he flaked out on me, and I had to call a cab at the last minute.”

CEFR level