Learn how to say Treason correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word treason:
(also high treason) [mass noun] the crime of betraying one’s country, especially by attempting to kill or overthrow the sovereign or government:
they were convicted of treason
the action of betraying someone or something:
doubt is the ultimate treason against faith
(petty treason) historical the crime of murdering someone to whom the murderer owed allegiance, such as a master or husband.
Middle English: from Anglo-Norman French treisoun, from Latin traditio(n-) ‘handing over’, from the verb tradere