backslider, bad egg, bad lot, bawd, betrayer, black sheep, bully, cadet, canary, degenerate, fallen angel, fancy man, fink, gigolo, hustle, hustler, lecher, lost sheep, lost soul, madam, maquereau, miscreant, nark, pander, panderer, peach, pervert, procure, procurer, procuress, profligate, prostitute, rat, recidivist, recreant, reprobate, scapegrace, sing, snitch, solicit, sorry lot, squeak, squeal, stool, stoolie, trollop, white slaver, whore, whoremonger