fluff

(noun) any light downy material.

(noun) something of little value or significance. Synonyms: bagatelle, frippery, frivolity.

(noun) a blunder (especially an actor's forgetting the lines).

(verb) make a mess of, destroy or ruin. Synonyms: botch, bodge, bumble, fumble, botch up, muff, blow, flub, screw up, ball up, spoil, muck up, bungle, bollix, bollix up, bollocks, bollocks up, bobble, mishandle, louse up, foul up, mess up, fuck up. Examples: "I botched the dinner and we had to eat out." "The pianist screwed up the difficult passage in the second movement."

(verb) erect or fluff up. Synonyms: ruffle. Examples: "The bird ruffled its feathers."

(verb) ruffle (one's hair) by combing the ends towards the scalp, for a full effect. Synonyms: tease.