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double cross

double cross

5 6.6
To betray someone after pretending to help them
  • noun
  • /ˈdʌbəl krɔs/
  • Informal
translation icon : doble traición
  • Her betrayal was a classic example of a double cross, as she pretended to help us while secretly working with our rivals.

Examples

Synonyms

betrayal
vsdouble cross
197 3.9

An act of not being loyal to someone, for example telling their secrets or helping an enemy

is narrower, involving false cooperation before the disloyal act
treachery
vsdouble cross
46 7.5

To betray someone's trust or loyalty

highlights that the breach follows a period of feigned support
duplicity
vsdouble cross
12 8.1

Dishonest behavior that hides true intentions to trick someone

is the specific act of breaking trust after feigned cooperation
backstabbing
vsdouble cross
  • Informal
11 5.4

A secret act of betrayal by someone who seems friendly

is the same kind of treachery but often after open pretended teamwork
double-crossing
vsdouble cross
5 7.4

An act of betraying someone who trusted you after pretending to help them

is the same act presented as the main entry
double-dealing
vsdouble cross
1 7.1

Dishonest behavior of pretending one thing but doing another

focuses on turning against someone after false cooperation rather than general deceit
act of Iscariotism
vsdouble cross
  • Literature
9.9

To betray someone for money or personal gain

is broader, covering such acts regardless of whether money is involved

Antonyms

1.0

Give help to a person or idea

How Treacherous

double cross
  • Informal
5 6.6
backstabbing
  • Informal
11 5.4
betrayal
197 3.9

Surface Forms

double cross singular

Morphology

double + cross

Although 'cross' can mean to oppose or frustrate and 'double' suggests twofold or a second action, the specific sense of betraying someone after feigning support involves deception that is not directly signaled by the constituents. A B1 learner who knows both words might guess some repeated opposition or a stronger crossing, but would be unlikely to derive the full idiomatic meaning without prior exposure.

Etymology

The noun double cross comes from a simple image: someone is 'crossed' (betrayed) once and then a second time, so double means two and cross means to go against someone. That's why a double cross means 'an act of betraying someone who trusted you'.