Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun treachery

2 senses of treachery

Sense 1
perfidy, perfidiousness, treachery -- (betrayal of a trust)
       => disloyalty -- (the quality of being disloyal)

Sense 2
treachery, betrayal, treason, perfidy -- (an act of deliberate betrayal)
       => dishonesty, knavery -- (lack of honesty; acts of lying or cheating or stealing)