snap

To break suddenly with a sharp sound, or cause something to do so.

"The dry twig snapped in half."

A quick, informal photograph, often taken spontaneously.

"Look at this lovely holiday snap!"

Done or made quickly and often without careful consideration.

"It was a snap decision."

To speak abruptly or angrily to someone, often in response to a question.

"'Don't be silly!' she snapped."