black out
Intermediate (B1)neutral
To suddenly faint or lose memory, OR for all the lights to go out completely.
"She blacked out from the heat and woke up on the floor of the stadium."
Hear it in context

Zoey Deutch & Maybelle!!! Who's A Good Guest?
BARK · 8:25
I black out.

From Dad’s Basement to Selling Two Companies — 4-Hour Workweek Success Story
Tim Ferriss · 20:35
Did I black out?

Free Agency Preview: AFC and NFC West Team Needs
NFL Fantasy Football · 52:17
Did I black out?

Tara Yummy's: Mindset Tour Documentary 2026
Tarayummy · 61:53
Does your body black out?

"The Most Dangerous Female Narcissist Looks Like Your Best Friend" 7 Signs To Spot Her | Dr. Salerno
Lisa Bilyeu · 50:06
I didn't black out.