1. Gain heat or get hot
   "The room heated up quickly"
   - heat, hot up [Brit] 
2. Make hot or hotter
   - heat 
3. Make more intense
   - hot up [Brit], screw up

Derived forms: heated up, heating up, heats up

Type of: alter, change, change state, compound, deepen, heighten, intensify, modify, turn

• thawed
• thawing
• ThB
• THC
• ThD
• the
• the absurd
• The Admirable Crichton
• the Alps
• the bends
• the boot
• the City
• the devil
• the Flood
• The Gambia
• the Great Calamity
• The Great Charter
• the Great Compromiser
• the Great Hunger
• the Great Starvation
• the great unwashed
• The Hague
• the halt
• the Hill
• The Holy See