To be snappy means to be quick, sharp, and full of energy. A snappy response comes fast and clever, like when someone asks a riddle and you fire back the answer without hesitation. A snappy dresser wears clothes that look sharp and put-together, catching people's attention in a good way.

The word captures a certain crispness and zip. A snappy salute from a soldier is precise and energetic, not slow or sloppy. Snappy dialogue in a movie moves quickly, with characters trading clever lines back and forth. When your teacher says “Make it snappy,” they mean hurry up and do it efficiently.

But snappy can also describe a tone that's irritable or short-tempered. If your older sister gives you a snappy reply when you ask to borrow something, her words come out sharp and impatient, showing she's annoyed.

The positive meanings of snappy (quick, clever, stylish) are more common than the negative one (irritable). When someone compliments your snappy new sneakers or your snappy presentation, they're celebrating your style and energy. The word suggests being alert, confident, and on your game.