تیزی

a.

asperity

--------

a.

poignancy

--------

a.

quickness

--------

n.

acuity / agility

--------

n.

cleverness / flippancy / fury / glibness / haste / heat / liveliness / nimbleness / pertness / piquancy

--------

n.

pungency

--------

n.

quickness / rapidity / sharpness / speed / swiftness / vehemence / vividnes / volatility