Double-cross Definition

dŭbəl-krôs, -krŏs

double-crosses

verb

To betray (a person) by doing the opposite of, or intentionally failing to do, what one has promised.

Webster's New World

To betray by acting in contradiction to a prior agreement.

American Heritage

To betray or go back on.

Wiktionary

Synonyms:

Antonyms:

noun

An act of betraying an ally, friend, or associate.

American Heritage

A new hybrid produced by crossing two existing hybrids (A × B → AB, C × D → CD, AB × CD → ABCD)

Webster's New World

A double-crossing; treachery.

Webster's New World

Synonyms:

Origin of Double-cross

First recorded in 1834 from thieves' slang cross (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.

From Wiktionary

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