whoreson

from WordNet (r) 3.0 (2006)

whoreson
    n 1: the illegitimate offspring of unmarried parents [syn:
         {bastard}, {by-blow}, {love child}, {illegitimate child},
         {illegitimate}, {whoreson}]
    2: insulting terms of address for people who are stupid or
       irritating or ridiculous [syn: {asshole}, {bastard},
       {cocksucker}, {dickhead}, {shit}, {mother fucker},
       {motherfucker}, {prick}, {whoreson}, {son of a bitch}, {SOB}]

from The Collaborative International Dictionary of English v.0.48

Whoreson \Whore"son\, n.
   A bastard; colloquially, a low, scurvy fellow; -- used
   generally in contempt, or in coarse humor. Also used
   adjectively. [Archaic] --Shak.
   [1913 Webster]