Simple Definition of duplicity
: dishonest behavior that is meant to trick someone
Full Definition of duplicity
1 : contradictory doubleness of thought, speech, or action; especially : the belying of one's true intentions by deceptive words or action
2 : the quality or state of being double or twofold
3 : the technically incorrect use of two or more distinct items (as claims, charges, or defenses) in a single legal action
Examples of duplicity
He exposed the spy's duplicity.
<we were lucky not to be taken in by his duplicity>
Origin of duplicity
Middle English duplicite, from Middle French, from Late Latin duplicitat-, duplicitas, from Latin duplex
First Known Use: 15th century
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