unbend

(verb) straighten up or out; make straight. Synonyms: straighten.

(verb) unfasten, as a sail, from a spar or a stay.

(verb) free from flexure. Example: "Unbend a bow."

(verb) make less taut. Synonyms: relax. Example: "Relax the tension on the rope."

(verb) become less tense, rest, or take one's ease. Synonyms: relax, loosen up, unwind, decompress, slow down. Examples: "He relaxed in the hot tub." "Let's all relax after a hard day's work."

(verb) release from mental strain, tension, or formality. Example: "Unbend the mind from absorbing too much information."