We don't have synonyms for mud shark yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are mudshark, cub shark and mud lark.
(n) :
(slang, derogatory, offensive, ethnic slur) A non-black person, usually a white woman, who has sexual relationships with black people, usually men.
(n) :
(slang, derogatory, offensive, ethnic slur) A non-black person, usually a white woman, who has sexual relationships with black people, usually men.