To debar is to officially bar, ban, or exclude someone from doing something. Debar can also mean to prevent something from happening. If you have a hat club, you can debar anyone who’s not wearing one.

If someone is barred from entering, they are prevented from entering. Oddly enough, to debar them means the same thing. If you're debarred from a school, you can no longer attend. If a politician is debarred from office, they've been thrown out. You can also debar events. Eating well and exercising can debar many health problems. This kind of debarring means the same as averting. People try to debar negative things from happening.

Definitions of debar

v prevent the occurrence of; prevent from happening

avert, avoid, deflect, fend off, forefend, forfend, head off, obviate, stave off, ward off
Type of:
forbid, foreclose, forestall, preclude, prevent
keep from happening or arising; make impossible

v prevent from entering; keep out

bar, exclude
Type of:
disallow, forbid, interdict, nix, prohibit, proscribe, veto
command against

v bar temporarily; from school, office, etc.

rusticate, send down
suspend temporarily from college or university, in England
Type of:
expel, kick out, throw out
force to leave or move out

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