quick-sighted
131penetrating — a. 1. Sharp, subtle, piercing, penetrative, permeating. 2. Discerning, intelligent, sagacious, sharp witted, clear sighted, acute, keen, quick, shrewd, keen sighted …
132sharp-witted — a. Acute, shrewd, quick, sharp, discerning, sagacious, ingenious, intelligent, keen, clear sighted, keen sighted, long headed, cunning …
