11 facts yü should know about the umlaut

Ever wonder why the plural of "mouse" is "mice"? Blame umlaut.

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1. The word "umlaut" comes from one of the Brothers Grimm.

Jacob Grimm was not only a collector of fairy tales (along with his brother Wilhelm), but also one of the most famous linguists ever. In 1819 he described a sound-change process that affected the historical development of German. He called it umlaut from um (around) + laut(sound).

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Arika Okrent

Arika Okrent is editor-at-large at TheWeek.com and a frequent contributor to Mental Floss. She is the author of In the Land of Invented Languages, a history of the attempt to build a better language. She holds a doctorate in linguistics and a first-level certification in Klingon. Follow her on Twitter.