ProverbWisdomInternational origin19th c.

There is no honor among thieves

Meaning: Criminals cannot trust each other since shared criminal intent provides no moral foundation for loyalty.

Origin: The reverse of the older saying "there is honor among thieves," which suggested that even criminals keep faith with each other. This more cynical version — people who cheat others will cheat each other too — appeared in the early 19th century.

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