English to English

verb (v)

• fall or diminish(verb.change)

  source: wordnet30
• change from a waking to a sleeping state(verb.body)

  Synonym:
  dope off, doze off, drift off, drowse off, fall asleep, flake out, nod off
  Antonym:
  arouse, awake, awaken, come alive, wake, wake up, waken
  

  source: wordnet30
• leave or unload(verb.contact)

  Example:
  Drop off the passengers at the hotel.
  

  Synonym:
  discharge, drop, put down, set down, unload
  

  source: wordnet30
• retreat(verb.competition)

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

  source: wordnet30
• get worse(verb.change)

  Synonym:
  drop away, fail, fall away, slip, suffer
  

  source: wordnet30