Английский словарь американских идиом - cross up

{v.}, {informal} 1. To block or upset; throw into confusion or disorder. * /We were going to catch him at the gate, but he crossed us up by going in the back way./ * /Father crossed up the surprise party we had planned for him by not getting back in time./ 2. To deceive or be false to. * /George crossed up his partner by selling a lot of things secretly./