hot_up
1. [ verb ] make more intense
Synonyms: screw_up heat_up
Examples:

"Emotions were screwed up"

Related terms: intensify
2. [ verb ] gain heat or get hot
Synonyms: heat_up heat
Examples:

"The room heated up quickly"

Related terms: cool change_state overheat fry heat heating heating_system
3. [ verb ] make more powerful, of cars and motorcycles
Synonyms: hop_up soup_up
Related terms: modify
Similar spelling:   hot_tub
  het_up