Pronunciation: /kiːl ˈoʊvər/
verb to collapse or fall over suddenly, especially as a result of exhaustion or illness
A1 The old man keeled over from exhaustion after walking for hours.
A2 She suddenly keeled over from a sudden bout of dizziness.
B1 The sailor keeled over when the ship hit rough waters.
B2 The hiker keeled over from dehydration during the intense trek.
C1 The marathon runner keeled over just before reaching the finish line.
C2 The boxer keeled over after taking a hard blow to the head.
formal The sailor keeled over from exhaustion after hours of rowing.
informal I thought I was going to keel over from laughter during the comedy show.
slang If I eat any more of this spicy food, I'm going to keel over!
figurative The news of his sudden death made her feel like she was going to keel over.
keeled over
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