fluff·y / ˈfləfē/ • adj. (fluff·i·er, fluff·i·est) 1. of, like, or covered with fluff: fluffy white clouds a fluffy towel. ∎ (of food) light in texture and containing air: cream the butter and sugar until pale and fluffy.2. inf. lacking substance, depth, or seriousness: the commercial wallows in soft, fluffy, feel-good territory. ∎ (of a person, esp. a woman) frivolous, silly, or vague: fluffy blondes in leopard-skin pedal pushers.DERIVATIVES: fluff·i·ly / ˈfləfəlē/ adv.fluff·i·ness n.