
Pass out
Sudden Fatigue
Use when someone collapses due to extreme tiredness or other overwhelming conditions.

Marathon runners often pass out at the finish line.
Medical Emergencies
Indicates a serious health issue, requiring immediate attention.

Call an ambulance if someone passes out and doesn't wake up.
Figurative Use
Sometimes used humorously to describe extreme reactions to surprising news.

I nearly passed out when I saw the price tag.
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