treason

/ˈtrizən/
noun
  1. The crime of betraying one's own country, especially by trying to overthrow the government or helping its enemies.
    • The spy was convicted of treason for selling military secrets to a foreign power.
    • In many countries, treason is considered the most serious crime a citizen can commit.
    • The general was executed for treason after leading a rebellion against the king.
  2. An act of betraying someone's trust or being disloyal to a person, group, or cause.
    • To the team, leaving for a rival company was an unforgivable treason.
    • The politician's decision to switch parties was seen as treason by his former supporters.
    • Sharing your friend's secret with everyone felt like a small act of treason.
What does "treason" mean? | whatsthatwordmean | whatsthatwordmean