Synonyms for Whoreson (same or very similar meaning)
WordNet sense 1 (the illegitimate offspring of unmarried parents):
illegitimate, by-blow, illegitimate childWordNet sense 2 (insulting terms of address for people who are stupid or irritating or ridiculous):
cocksucker, motherfucker, prick, shit, dickhead, asshole, mother fucker, son of a bitchFrom the ODE community, based on WordNetadd/edit