For a given definition of "the". Taken from a word trivia site:
Pepperroot, pepperwort, pewterwort, pirouetter, prerequire, pretorture, proprietor, repertoire, tetterwort and typewriter, each 10 letters long, are the longest words that can be typed using only those letters on the top row of a typewriter.
Along with perpetuity.
Shakalshas, 10 letters long, is the longest word that can be typed using only those letters in the middle row of a typewriter.
If someone who applies torture is a torturer, then wouldn't someone who applies pretorture (eg Dick Cheney) be a pretorturer ? --Pallando