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

2 senses of betrayal

Sense 1
treachery, betrayal, treason, perfidy -- (an act of deliberate betrayal)
       => dishonesty, knavery -- (lack of honesty; acts of lying or cheating or stealing)

Sense 2
betrayal -- (the quality of aiding an enemy)
       => treason, subversiveness, traitorousness -- (disloyalty by virtue of subversive behavior)