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Synonyms

keel over

British  

verb

  1. to turn upside down; capsize

  2. informal (intr) to collapse suddenly

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

keel over Idioms  
  1. Collapse, as if in a faint; also, faint. For example, When she heard the awful news, she keeled over. This term alludes to a vessel rolling on its keel and capsizing. [Mid-1800s]


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

It’s the humidity, which has spiked to over 80%, that has them feeling ready to keel over between sets.

From The Wall Street Journal Oct. 10, 2025

“I feel fine; I’ll probably keel over after I hang up the phone,” he joked.

From Los Angeles Times Jul. 10, 2025

“I thought maybe I would keel over on the bench because I love it, I love it, I love it.”

From Seattle Times Apr. 10, 2024

It’s fair to say that with the couple’s end, we can expect romance, love, and human relations in general to officially keel over and die.

From Slate Oct. 17, 2018

Mother would keel over if I showed up with a skirt above the knee when Stuart picks me up.

From "The Help" by Kathryn Stockett

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