The Collaborative International Dictionary of English v.0.48:

Sloven \Slov"en\, n. [D. slaf careless, negligent, a sloven;
   akin to LG. sluf slovenly.]
   A man or boy habitually negligent of neathess and order; --
   the correlative term to slattern, or slut. --Pope.
   [1913 Webster]

         He became a confirmed sloven.            --Macaulay.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sloven
    n 1: a coarse obnoxious person [syn: slob, sloven, pig,
         slovenly person]