English to English

verb (v)

• undo the ties of(verb.contact)

  Synonym:
  unlace, untie
  Antonym:
  bind, tie
  

  source: wordnet30
• remove from tension(verb.change)

  source: wordnet30
• remove a brace or braces from(verb.change)

  source: wordnet30
• To free from tension; to relax; to loose; as, to unbrace a drum; to unbrace the nerves.(verb)

  source: webster1913