double-cross

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See also: doublecross

English[edit]

English Wikipedia has an article on:
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Etymology[edit]

First recorded in 1834 from thieves' slang cross (or on the cross) to refer to something dishonest, a play on straight/square, and therefore a crook going back on his partners would be crossing the crossers, or double-crossing.

Verb[edit]

double-cross (third-person singular simple present double-crosses, present participle double-crossing, simple past and past participle double-crossed)

  1. To betray or go back on.
    If you double-cross us, we'll track you down and kill you.
  2. (plant breeding, animal breeding) To cross twice in hybridization, as (A × B) × (C × D); for example, in commercial hybrid seed corn, A through D are classically inbreds, and their grandoffspring is the seed for sale.

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