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treasonable

[tree-zuh-nuh-buh l] /ˈtri zə nə bəl/
adjective
1.
of the nature of treason.
2.
involving treason; traitorous.
Origin
1325-1375
1325-75; Middle English tresonabill. See treason, able
Related forms
treasonably, adverb
nontreasonable, adjective
nontreasonableness, noun
nontreasonably, adverb
untreasonable, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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