treasonable

[ tree-zuh-nuh-buhl ]
/ ˈtri zə nə bəl /

adjective

of the nature of treason.
involving treason; traitorous.

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Origin of treasonable

First recorded in 1325–75, treasonable is from the Middle English word tresonabill.See treason, able

OTHER WORDS FROM treasonable

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for treasonable