Debar

"Debar" means:

1. To exclude or shut out; bar.
2. To forbid, hinder, or prevent.
3. to shut out or exclude.
4. to prohibit.
5. to bar, exclude,black, stop, keep out, preclude, blackball or interdict.

• Sources: http://www.thefreedictionary.com/debar and http://www.freethesaurus.com/debar.