secession

/səˈsɛʃən/
noun
  1. The act of formally withdrawing from a political union, organization, or group.
    • The treaty included a clause allowing for peaceful secession of any province.
    • Several members threatened secession from the club if the rules were not changed.
    • The state's secession from the union led to a long and bitter conflict.
Antonyms
What does "secession" mean? | whatsthatwordmean | whatsthatwordmean