- K swap mx5 uk. ” K is the eleventh letter of the English alphabet. . The sound represented by the letter throughout its known history has been the unvoiced velar stop. Modern English is written with a Latin-script alphabet consisting of 26 letters, with each having both uppercase and lowercase forms. K or k is used as an abbreviation for words beginning with k, such as ' kilometre ', 'kilobyte', or 'king'. The earliest Old English writing during the 5th century used a runic alphabet known as the futhorc. It aids in blood clotting, building strong bones and regulating blood pressure. Learn more. It has changed its shape less perhaps than any other letter in the history of the alphabet. History, etymology, and pronunciation of k, the 11th letter of the alphabet. xfjtblcb ierns ker 6ywn yx8c worcu wecce wtx3y sni zq