Home › Words › U › unbarunbarunbar means to unlock or unbolt a door that had been locked or bolted with a bar.Among words judged in Lexicurio's Arena, unbar ranks #16,730 of 42,747 for Qualifying.EtymologyFrom Middle English unbarren, equivalent to un- + bar.verbTo unlock or unbolt a door that had been locked or bolted with a bar.To remove an impediment that obstructs the passage of (someone or something).To remove a prohibition.Definitions & examples from Wiktionary (CC BY-SA 3.0).