straighten, unbend -- (straighten up or out; make straight)
unbend -- (unfasten, as a sail, from a spar or a stay)
unbend -- (free from flexure; "unbend a bow")
relax, unbend -- (make less taut; "relax the tension on the rope")
relax, loosen up, unbend, 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")
unbend -- (release from mental strain, tension, or formality; "unbend the mind from absorbing too much information")
(Sound)
