Meanings
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1
verb
to remove a bar or bolt from a door, gate, or other entrance
The guard agreed to unbar the gate at sunrise.
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2
verb
figurative: to remove an obstacle or prohibition and allow access
The ruling could unbar the path to a new election.
Thesaurus
Etymology
From Middle English unbarren, formed from the reversing prefix un- + bar. The literal removal of a door bar gave rise to the broader sense of removing an obstacle or prohibition.