unwind

(verb) reverse the winding or twisting of. Synonyms: wind off, unroll. Example: "Unwind a ball of yarn."

(verb) separate the tangles of. Synonyms: disentangle.

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

(verb) cause to feel relaxed. Synonyms: relax, unstrain, unlax, loosen up, make relaxed. Example: "A hot bath always relaxes me."