What is the meaning of unbending?

verb

• Straighten up or out; make straight.
  • synonyms: straighten, unbend
• Unfasten, as a sail, from a spar or a stay.
  • synonyms: unbend
• Free from flexure.
  • usage: "unbend a bow"
  • synonyms: unbend
• Make less taut.
  • usage: "relax the tension on the rope"
  • synonyms: relax, unbend
• Become less tense, rest, or take one's ease.
  • usage: "He relaxed in the hot tub"; "Let's all relax after a hard day's work"
  • synonyms: relax, loosen up, unbend, unwind, decompress, slow down
• Release from mental strain, tension, or formality.
  • usage: "unbend the mind from absorbing too much information"
  • synonyms: unbend

adjective

• Incapable of adapting or changing to meet circumstances.
  • usage: "a rigid disciplinarian"; "an inflexible law"; "an unbending will to dominate"
  • synonyms: inflexible, rigid