fluff up


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fluff something up

to make something soft appear fuller or higher. Fluff your pillow up before you go to bed. She fluffed up her pillow before retiring.
See also: fluff, up

fluff up

v.
To shake or ruffle something, especially something with feathers or fur, to make it softer, puffier, or larger: When my canary fluffs up its feathers, it looks round and fat. I fluffed up the cat's fur with a hairbrush. The pillows will be more comfortable if you let me fluff them up.
See also: fluff, up