Why Do People Say 'OK'?

The term "OK" is so common that we don't give its origin much thought -- but the tiny word has quite an intriguing history. There are several theories explaining the roots of "OK," but the most commonly-accepted theory is that it's an abbreviation for two words, neither of which actually begin with an "o" or a "k."

Most historians agree that OK stands for "all correct," which is why we use the word to express agreement, approval or just as a way of saying that everything is fine. The shorthand expression came about during the late 1830s, when it became popular to use abbreviations rather than entire terms during conversations. For example, people would commonly say OFM instead of "our first men" and SP instead of "small potatoes."

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Remy Melina was a staff writer for Live Science from 2010 to 2012. She holds a bachelor’s degree in Communication from Hofstra University where she graduated with honors.