4. (verb)relax, unbend make less taut
"relax the tension on the rope"
5. (verb)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"
6. (verb)unbend release from mental strain, tension, or formality "unbend the mind from absorbing too much information"