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(dŭb′əl-krôs′, -krŏs′)
tr.v. dou·ble-crossed, dou·ble-cross·ing, dou·ble-cross·es
To betray by acting in contradiction to a prior agreement. See Synonyms at deceive.
1. often double cross An act of betraying an ally, friend, or associate.
2. double cross Genetics A cross in which each parent is the product of a single cross. It can be represented as AB × CD, where A, B, C, and D are inbred lines.

dou′ble-cross′er n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.double-crosser - a person who says one thing and does anotherdouble-crosser - a person who says one thing and does another
beguiler, cheater, deceiver, trickster, slicker, cheat - someone who leads you to believe something that is not true
Judas - someone who betrays under the guise of friendship


One who betrays:
Informal: rat.
References in periodicals archive ?
It's a far cry from his usual world of low-life clients, and he must summon all of his skills as a double-crosser to survive.
Double-crosser Belmokhtar was kicked out as one of its top leaders in Mali in October after he was caught cheating other fighters.
Reservoir Dogs NOT sure if this really counts as the double-crosser in question - in this case, Tim Roth's undercover copper - spends most of the film covered in blood and slowly dying from a gunshot wound to the stomach.