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English definition of “treasonable”


adjective uk   /ˈtriː.zən.ə.bl̩/ (also treasonous) formal us  
A treasonable act, crime, etc. is, or is considered to be, treason: a treasonable offence treasonable activitiesDisloyalty, betrayal and treasonLegal and illegal
(Definition of treasonable from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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