verb (v)

• fall backwards and down(verb.motion)

  source: wordnet30
• hang (back) or fall (behind) in movement, progress, development, etc.(verb.motion)

  Synonym:
  dawdle, fall behind, lag
  

  source: wordnet30
• move back and away from(verb.motion)

  source: wordnet30
• retreat(verb.competition)

  Synonym:
  drop off, fall behind, lose, recede
  Antonym:
  advance, gain, gain ground, get ahead, make headway, pull ahead, win
  

  source: wordnet30
• have recourse to(verb.social)

  Synonym:
  recur, resort
  

  source: wordnet30
• go back to bad behavior(verb.body)

  Synonym:
  lapse, recidivate, regress, relapse, retrogress
  

  source: wordnet30