unbar

v (-rr-) [Tn] remove bars from (a door, gate, etc) to allow entry 拉开（门等）的闩: (fig 比喻) unbar the way to a nuclear-free world 扫除通向无核世界的障碍.

unarmed, unarticulated, unashamed, unashamedly, unasked, unasked for, unassailable, unassuming, unassumingly, unattached, unattended, unattractive, unavailable, unavailing, unavoidable, unavoidably, unaware, unawares, unbalance, unbalanced, unbearable, unbearably, unbeatable, unbeaten, unbecoming, unbelief, unbelievable, unbelievably, unbeliever, unbelieving, unbend, unbending, unbiased, unbidden, unbind, unblemished, unblushing, unblushingly, unborn, unbounded,