Treason

/ˈtriː.zən/

Meaning & Definition

noun
The crime of betraying one's country, especially by attempting to kill the sovereign or overthrow the government.
He was charged with treason for selling military secrets to a foreign power.
A betrayal of trust or confidence.
Many saw her decision to work with the rival corporation as an act of treason against her own team.
In historical contexts, a serious breach of loyalty to one's country, often punishable by death.
The king declared him a traitor, guilty of treason, and sentenced him to execution.

Etymology

Middle English, from Old French 'trahison', from Latin 'traditio' meaning 'to hand over'.

Common Phrases and Expressions

commit treason
To engage in acts that betray one's country.
act of treason
A specific deed that constitutes betrayal.
high treason
Treason against the monarchy or state, often seen as more serious.

Related Words

traitor
A person who betrays a friend, country, principle, etc.
betrayal
The act of betraying someone or something.
sedition
Conduct or speech inciting people to rebel against authority.

Slang Meanings

Backstabber
Don't trust him; he's a backstabber who would commit treason for his own gain.
Turncoat
He was called a turncoat after he switched sides in the political arena.