This word is not acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. a frotteur

"But as L. J. Davis, reviewing the DSM in Harper's, once wrote: "It may very well be that the frotteurist is a helpless victim in the clutches of his obsession, but it's equally possible that he's simply a bored creep looking for a cheap thrill.""