trea·son·ous

[tree-zuh-nuhs]
adjective

Origin:
1585–95; treason + -ous

trea·son·ous·ly, adverb
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World English Dictionary
treason (ˈtriːzən) [Click for IPA pronunciation guide]
 
n
1.  violation or betrayal of the allegiance that a person owes his sovereign or his country, esp by attempting to overthrow the government; high treason
2.  any treachery or betrayal
 
[C13: from Old French traïson, from Latin trāditiō a handing over; see tradition, traditor]
 
'treasonable
 
adj
 
'treasonous
 
adj
 
'treasonableness
 
n
 
'treasonably
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Relevant Questions
00:10
Treasonous is always a great word to know.
So is lollapalooza. Does it mean:
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
the offspring of a zebra and a donkey.
Example sentences
It authorises demonstrations even as it claims they no longer are justified and then labels them as treasonous.
It's funny how so many consider the confederates as treasonous.
He was guilty of not going to the authorities with the treasonous information.
They are outright traitors themselves or apologists for treasonous behavior.
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