#1 unbend v. [straighten] straighten up or out; make straight. wn
#2 unbend v. unfasten, as a sail, from a spar or a stay. wn
#3 unbend v. free from flexure; "unbend a bow". wn
#4 unbend v. [relax] make less taut; "relax the tension on the rope". wn
#5 unbend v. [relax, loosen up, unwind, decompress, slow down] become less tense, rest, or take one's ease; "He relaxed in the hot tub"; "Let's all relax after a hard day's work". wn
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