English to English

verb (v)

• gain heat or get hot(verb.change)

  Synonym:
  heat, hot up
  

  source: wordnet30
• make hot or hotter(verb.change)

  Synonym:
  heat
  Antonym:
  chill, cool, cool down
  

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

  Synonym:
  hot up, screw up
  

  source: wordnet30