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obviate

ob·vi·ate

obviate

 
pronunciation:
ab vi eIt
part of speech: transitive verb
inflections: obviated, obviates, obviating
definition: to prevent or eliminate in advance; render unnecessary or irrelevant.
This new law will obviate the need to amend the constitution.
synonyms:
avert, eliminate, foreclose, forestall, preclude, prevent, ward off
similar words:
bypass, cancel, circumvent, foredoom, frustrate, moot, negate, prohibit, skirt, stave off, wade
derivation: obviation (n.)