How the internet is saving the interjection, by Ben Yagoda in Slate. “Interjections are probably the most expressive part of speech. They are definitely the most disregarded and always have been. When the Greek grammarian Thrax came up with the idea of dividing language into parts of speech in about 100 B.C., he didn’t include interjections, and his English-language heirs have tended to do so grudgingly.” [ via negatendo.net ]