Secede (verb)

To withdraw formally from membership of a federation or body, especially a political union.

Origin:

From latin secēdere, from se- "apart" + cēdere "go, withdraw".

Examples:

1. The state seceded from the Union.
2. The region seceded from the country.
3. The group seceded from the organization.
4. The team seceded from the league.
5. The company seceded from the partnership.