secede (v.) Look up secede at Dictionary.com
1702, "to leave one's companions," from Latin secedere "go away, withdraw, separate; rebel, revolt," from se- "apart" (see secret (n.)) + cedere "to go" (from PIE root *ked- "to go, yield"). Sense of "to withdraw from a political or religious alliance of union" is recorded from 1755, originally especially in reference to the Church of Scotland. Related: Seceded; seceding; seceder.