fad /fæd/ noun [countableC] DLFASHIONABLEsomething that people like or do for a short time, or that is fashionable for a short time 一时的狂热;时尚,风尚 Interest in organic food is not a fad, it’s here to stay. 对有机食品的兴趣不是一时的风尚,它是长久的喜好。
—faddish adjectiveadj
—faddishness noun [uncountableU]