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[tree-zuh-nuh s] /ˈtri zə nəs/
Origin of treasonous
1585-95; treason + -ous
Related forms
treasonously, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for treasonous
Contemporary Examples
Historical Examples
  • Hadst thou been concerned in treasonous undertakings the matter would be plain.

    In Doublet and Hose Lucy Foster Madison
  • It is not possible; it would not be wise; it would be treasonous to the General Woo-san-Kwei.

    The War Tiger Wiliam Dalton
  • It secured me his confidence—while strengthening his treasonous intention.

    The Bandolero Mayne Reid
  • But he has no right to involve you in these treasonous tricks of his.

    Angelot Eleanor Price
  • But Richelieu discovered his treasonous relations with Spain and by this means defeated his plot.

Word Origin and History for treasonous

mid-15c., from treason + -ous. Related: Treasonously.

Online Etymology Dictionary, © 2010 Douglas Harper
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