slack off片語動詞KK [slæk ɔf] /slæk ɔf/發音片語動詞1偷懶、懈怠、混日子口語He started slacking off as soon as the manager left.經理一走,他就開始偷懶。2放鬆努力、鬆懈Don't slack off now; the exam is only two weeks away.現在別鬆懈,考試只剩兩個星期了。3減弱、減少、轉淡Sales usually slack off after the holiday season.銷售在假期過後通常會轉淡。