"Keel over" is a common expression in English that means to faint or collapse. The spelling of "keel" is pronounced /kiːl/ using IPA phonetic transcription, which represents the sound of the letter "k" followed by the long "e" sound. Meanwhile, "over" is spelled as /ˈoʊvər/, which corresponds to the sound of the letter "o" pronounced as a diphthong "ow" followed by a short "uh" sound. Together, "keel over" creates a vivid image of a boat suddenly capsizing and is used metaphorically to describe a sudden and unexpected loss of consciousness.
The phrase "keel over" refers to the sudden collapse or fainting of a person, often due to a loss of consciousness or extreme fatigue. It is an informal expression used to describe a person falling over or collapsing suddenly. More specifically, it is often used to depict a situation where someone falls to the ground, typically from a standing or seated position, in a sudden and uncontrolled manner.
The term "keel over" originates from nautical terminology, where the keel of a ship is the central structural element that helps maintain balance and stability. When a ship leans or tilts to one side, it is said to have "keeled over". This connection between a sudden loss of stability and the act of collapsing or falling over is applied metaphorically to describe a person's physical condition.
The phrase implies a sense of suddenness and unexpectedness, suggesting that the person collapses without any warning. It is often associated with extreme fatigue, physical exhaustion, or a sudden health issue leading to unconsciousness. However, "keel over" can also be used more figuratively to describe situations where someone fails or is defeated abruptly, similar to a person toppling over. Overall, "keel over" conveys the idea of a sudden and uncontrolled collapse or failure.
The phrase "keel over" has nautical origins and comes from the sailing term "keel", which refers to the central structural backbone of a boat or ship. The word "keel" derives from the Old English word "cēol", which meant "ship" or "vessel". When a ship or boat loses balance or stability, it may "keel over", causing it to capsize or turn upside down. Over time, the phrase "keel over" has been adopted metaphorically to describe someone collapsing or falling over suddenly due to fainting, exhaustion, or physical weakness.