As a noun treachery
is deliberate, often calculated, disregard for trust or faith.
As an adjective duplicitous is
given to or marked by deliberate deceptiveness in behavior or speech.
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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duplicitous
English
Adjective
(
en adjective)
Given to or marked by deliberate deceptiveness in behavior or speech.
Synonyms
* deceitful, double-dealing, two-faced
Related terms
* duplicate
* duplicitously
* duplicitousness
* duplicity