English to English

verb (v)

• make more cheerful(verb.emotion)

  Synonym:
  buoy up, lighten
  Antonym:
  weigh down, weigh on
  

  source: wordnet30
• become more cheerful(verb.communication)

  source: wordnet30
• make lighter or brighter(verb.change)

  Synonym:
  brighten, illume, illuminate, illumine, light, light up, lighten
  

  source: wordnet30
• become lighter(verb.change)

  Synonym:
  lighten
  Antonym:
  darken
  

  source: wordnet30