fess up片語動詞KK [fɛs ʌp] /fɛs ʌp/發音片語動詞1坦白、承認、招認口語He finally fessed up to breaking the kitchen window.他終於坦白,廚房的窗戶是他打破的。2說出實情、交代口語Come on, fess up — where did you hide the money?快說實話吧,你把錢藏在哪裡了?