unbend

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

straighten relax decompress unwind loosen up slow down

bend flex twist deform turn tense up tense

unbent

unbelt unbent

unbendable unbending