IPA: /ˈtriːzən/
KK: /ˈtrizən/
The act of betraying one's country or government, especially by helping an enemy or trying to overthrow the government.
He was charged with treason for leaking classified information to foreign agents.
Treason → It originates from Old French *traïson* (meaning betrayal) and is derived from the Latin *traditio* (meaning handing over or delivery). The word 'treason' refers to the act of betraying one's country or sovereign, particularly by aiding enemies.
Think of 'handing over' ('traditio') something important, which helps you remember that treason means betraying one's country.