English to English

verb (v)

• gain heat or get hot(verb.change)

  Synonym:
  heat, heat up
  Antonym:
  chill, cool, cool down
  

  source: wordnet30
• make more intense(verb.change)

  Synonym:
  heat up, screw up
  

  source: wordnet30
• make more powerful(verb.change)

  Synonym:
  hop up, soup up
  

  source: wordnet30