Etymology

unbar

U1N1B3A1R1

Today it means: To unlock or unbolt a door that had been locked or bolted with a bar. Full definition →

Middle English unbarren
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The story

  1. Middle English · inherited fromunbarren
  2. English todayunbar

From Middle English unbarren, equivalent to un- + bar.

Etymology from Wiktionary, CC BY-SA 4.0.