se·ces·sion·ism 
(sĭ-sĕshə-nĭz′əm)
(sĭ-sĕshə-nĭz′əm)n.
The policy of those advocating secession or supporting the right of secession.
se·cession·ist n.
- split
- Split
- split-brain
- split decision
- split end
- split-fingered fastball
- split hairs
- split infinitive
- split-level
- split one's sides
- split personality
- split rail
- split-rail
- split second
- split shift
- splitsville
- splitter
- split the difference
- split ticket
- splitting
- splog
- splotch
- splotchiness
- splotchy
- splurge