treasonable

English

Etymology

treason +‎ -able

Adjective

treasonable (comparative more treasonable, superlative most treasonable)

1. Involving or constituting treason.

   Synonyms: seditious, traitorous, treasonous

   • 1837, L[etitia] E[lizabeth] L[andon], Ethel Churchill: Or, The Two Brides. […], volume II, London: Henry Colburn, […], →OCLC, pages 121–122:

     "I can feel," said he, "for a gentleman in your circumstances; but it is my duty to see that no communication takes place between yourself and the ladies involved in the suspicion of treasonable practices. Your farewells must be made in my presence."