snap at

cold snap

A short and sudden period of cold weather.

in a snap

At once, almost immediately, very quickly or suddenly.

in the snap of one's fingers

In a snap.

snap at someone's heels

To compete with someone closely, with the possibility of soon defeating or replacing them.

snap back

To recover quickly.

snap it up

To hurry, to proceed quickly.

snap judgment

A decision made without deliberation or in excessive haste.

snap out of

To terminate suddenly a mood, emotional state, or reverie.