connoisseur
con.nois.seur \.ka:n-*-'s*r also -'su.(*)r\ \-.ship\ n [obs. F (now connaisseur), fr. OF connoisseor, fr. connoistre] to know, fr. L cognoscere - more at COGNITION : EXPERT; esp : one who understands the details, technique, or principles of an art and is competent to act as a critical judge - con.nois.seur.ship n