As nouns the difference between treachery and duplicity
is that treachery is deliberate, often calculated, disregard for trust or faith while duplicity is intentional deceptiveness; double-dealing.
treachery
English
Noun
(treacheries)
Deliberate, often calculated, disregard for trust or faith.
The act of violating the confidence of another, usually for personal gain.
Treason.
Synonyms
* Punic faith
* treacherousness
Derived terms
* treacher
* treacherous
Related terms
* trick
* trickster
* tricky
External links
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duplicity
English
Noun
Intentional deceptiveness; double-dealing.
Related terms
* duplicitous
See also
* double-cross