Other forms: choppier; choppily; choppiest
When water is choppy, it's wind-blown and rippling with waves. It's tricky for a beginner to sail in a choppy lake.
Choppy usually describes what happens to the surface of a body of water during a storm. Strong wind blowing across a bay, for example, turns the water choppy and rough. Something with a jerky, abrupt way of moving or flowing is also choppy, whether it's a piece of music or a filmed scene in a movie. In the 1600s, a stormy sea was described as chopping, which had changed to choppy by about 1830.