A slovenly fop; one finely dressed, but dirty. This term's also used to refer to mobsters, who appear nice on the surface, but are nasty thugs underneath.
Sure, the capo's son dresses nice, but he's a beau-nasty brute underneath that suit...
von Erin Montgomery 1. Mai 2010
1 more definition
Someone who doesn't shower or keep their body clean, but dresses nice to try and cover it up. Or it can be calling someone a nasty boy.
Anna is such a beaunasty.
von abby j jamie 12. März 2007