cross up1.■[俚语]欺骗；背叛；出卖：He crossed her up after they agreed to tell the police the same story.他们约定对警察说一样的话，但后来他出卖了她。2.■打乱，搅乱；破坏；阻挠：His withdrawal to the second line of duty crossed up the whole arrangement.他退居二线打乱了整个安排。3.■[俚语]把…搞糊涂：The consumers crossed up the sales experts.消费者把销售专家们搞糊涂了。