quick

Apprehending and responding with speed and sensitivity.

“a quick mind”

Accomplished rapidly and without delay.

“was quick to make friends”

“his quick reaction prevented an accident”

Easily aroused or excited.

“a quick temper”

Performed with little or no delay.

“was quick to respond”

Moving quickly and lightly.

“quick of foot”

Hurried and brief.

“a quick inspection”

With little or no delay.

“come here, quick!”

Any area of the body that is highly sensitive to pain (as the flesh underneath the skin or a fingernail or toenail).