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

3 senses of treason

Sense 1
treason, high treason, lese majesty -- (a crime that undermines the offender's government)
       => crime, offense, criminal offense, criminal offence, offence, law-breaking -- ((criminal law) an act punishable by law; usually considered an evil act; "a long record of crimes")

Sense 2
treason, subversiveness, traitorousness -- (disloyalty by virtue of subversive behavior)
       => disloyalty -- (the quality of being disloyal)

Sense 3
treachery, betrayal, treason, perfidy -- (an act of deliberate betrayal)
       => dishonesty, knavery -- (lack of honesty; acts of lying or cheating or stealing)