intelligent

having the capacity for thought and reason especially to a high degree; "is there intelligent life in the universe?"; "an intelligent question"

• agile, nimble — mentally quick
• alert — mentally responsive
• apt, clever — mentally quick and resourceful
• brainy, brilliant, smart as a whip — having or marked by unusual and impressive intelligence
• bright, smart — characterized by quickness and ease in learning
• incisive, keen, sharp — very penetrating and clear and sharp in operation
• natural, born(p), innate(p) — being talented through inherited qualities
• quick, ready — apprehending and responding with speed and sensitivity
• prehensile — having a keen intellect
• scintillating — brilliantly clever
• searching, trenchant — having keenness and forcefulness and penetration in thought, expression, or intellect

• intelligence — the ability to comprehend; to understand and profit from experience