tending to penetrate
having the power of entering or piercing "a toxic penetrative spray applied to the surface" "a cold penetrating wind" "a penetrating odor"
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"