incisive (
http://definr.com/incisive)
adj 1: having or demonstrating ability to recognize or draw fine
distinctions; "an acute observer of politics and
politicians"; "incisive comments"; "icy knifelike
reasoning"; "as sharp and incisive as the stroke of a
fang"; "penetrating insight"; "frequent penetrative
observations" [syn:
acute,
discriminating,
keen,
knifelike,
penetrating,
penetrative,
piercing,
sharp]
2: very penetrating and clear and sharp in operation; "an
incisive mind"; "a keen intelligence"; "of sharp and
active intellect" [syn:
keen,
sharp]
3: suitable for cutting or piercing; "incisive teeth"; "the
piercing needle" [syn:
piercing]