Synonyms for Debar:

n.

not brook something, evict, decline, clamp down, refuse, dismiss. restrict, thwart, deny, disturb, keep from, restrain, check, silence. debar (noun)
exclude, avert, head off, bar, ward off, obviate, deflect, stave off, avoid, suspend, fend off.

v.

prohibit (verb)
deny, suspend, refuse, exclude.
social (verb)
suspend.

Other synonyms:

ban, proscribe, outlaw. exclude
ward off.
inhibit
taboo.
prohibit
bar.