To disturb the smoothness or tranquility of something. The sudden gust of wind ruffled the surface of the lake.
To disarrange or disorder by running one's fingers through. She ruffled his hair playfully as she walked by.
To upset or irritate someone. His comments were meant to ruffle the audience, but they remained calm.
To make a sound resembling the movement of fabric or paper. The pages of the book ruffled as she turned them quickly.
To ornament (a garment or fabric) with ruffles. The designer ruffled the cuffs to give the shirt a vintage feel.
Of a bird or animal, to raise or fluff up (feathers or fur) as a display of agitation or to keep warm. The sparrow ruffled its feathers against the morning chill.
To become wrinkled, uneven, or lightly agitated. The pond's surface ruffled when the first raindrops fell.