1. Made impossible
   - preclusive

1. Do away with
   - rid of, eliminate 
2. Prevent the occurrence of; prevent from happening
   - debar, forefend, forfend, deflect, avert, head off, stave off, fend off, avoid, ward off

See also: obviation, preventative, preventive

Type of: forbid, foreclose, forestall, preclude, prevent

Antonym: necessitate

• brown bells
• brown bent
• brown Betty
• brown bread
• brown bullhead
• brown butter
• brown coal
• brown creeper
• brown cup
• brown dwarf
• brown goods
• brown hickory
• brown hyena
• brown lacewing
• brown lemming
• brown oak
• brown onion sauce
• brown pine
• brown rat
• brown rice
• brown root rot fungus
• brown rot
• brown rot gummosis
• brown sauce
• brown snail