verb (v)

• be unsuccessful(verb.social)

  Synonym:
  fail, go wrong
  Antonym:
  bring home the bacon, come through, deliver the goods, succeed, win
  

  source: wordnet30
• suffer a miscarriage(verb.body)

  Antonym:
  carry to term
  

  source: wordnet30
• To carry, or go, wrong; to fail of reaching a destination, or fail of the intended effect; to be unsuccessful; to suffer defeat.(verb)

  source: webster1913