heat_up
1. [ verb ] gain heat or get hot
Synonyms: hot_up heat
Examples:

"The room heated up quickly"

Related terms: cool change_state overheat fry heat heating heating_system
2. [ verb ] make hot or hotter
Synonyms: heat
Examples:

"heat the soup"

Related terms: cool change toast sear broil scald preheat calcine soak reheat overheat heat heater heat
3. [ verb ] make more intense
Synonyms: screw_up hot_up
Examples:

"Emotions were screwed up"

Related terms: intensify
Similar spelling:   het_up
  head_up
  heath_pea
  heat_wave