Misuser
Pronunciation : Mis*us"er
Part of Speech : n.
Definition : 1. One who misuses. "Wretched misusers of language." Coleridge.
2. (Law)
Defn: Unlawful use of a right; use in excess of, or varying from, one's right. Bouvier.
Source : Webster's Unabridged Dictionary, 1913