CHEATto cheat someone, especially after you have agreed to do something dishonest with them 〔尤指在答应与对方一起做坏事后〕叛卖,出卖
—double cross noun [countableC]
—double-crosser noun [countableC]
Examples from the Corpus
double-cross• He was killed for double-crossing his Mobbosses.• I'm warning you - if you double-cross me, I'll kill you.• Harry and Danny double-crossed the gang and escaped with all the money.
From Longman Business Dictionary
double-crossˌdouble-ˈcross verb [transitiveT]
to cheat someone who you are involved in an illegal or dishonest activity with
He was living in fear of drug traffickers he had double-crossed.