Verb heat up has 3 senses
- heat, hot up, heat up - gain heat or get hot; "The room heated up quickly"
--1 is one way to change state, turn
The water heat ups
- heat, heat up - make hot or hotter; "heat the soup"
--2 is one way to change, alter, modify
They heat up the water
- heat up, hot up, screw up - make more intense; "Emotions were screwed up"
--3 is one way to intensify, compound, heighten, deepen
Somebody ----s something
Something ----s something