Definition of treasonable in English:

treasonable

Syllabification: trea·son·a·ble
Pronunciation: /ˈtrēzənəbəl
 
/

adjective

  • (Of an offense or offender) punishable as treason or as committing treason: there was no evidence of treasonable activity
    More example sentences
    • Mobutu shirts and leopard-print hats are worn openly, a practically treasonable offence only six months ago.
    • The church was further bolstered in 1563 when another Act of Uniformity made refusal to take the oath, or the defence of papal authority, a treasonable offence.
    • The Senate considered this to be a treasonable offence but there was little they could do.
    Synonyms
    traitorous, treasonous, treacherous, disloyal; seditious, subversive, mutinous, rebellious
    literary perfidious

Derivatives

treasonably

adverb
More example sentences
  • Thus, for those Americans who are firmly committed to the war, dissenters are acting treasonably because they are encouraging the enemy and arguably putting American lives at risk.
  • When he was charged with treason in 1467 it was alleged against him that his flags and standard had been set up treasonably on Carlow Castle.
  • They enumerate the sins of the collective ‘we ‘- ‘We have acted treasonably, aggressively, and slanderously… perniciously, disdainfully, and erratically.‘

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