foxier
Craftier and wilier
Foxier is the comparative form of foxy, meaning more cunning, sly, or craftily clever.
In informal use, foxier often means more sexually attractive: She's even foxier than her sister.
The word carries the fox's reputation for wiliness and, in the attractiveness sense, a hint of knowing allure.
Skilled at deception
artful · guileful · trickier · manipulative · astute · calculating · conniving · cagier