heat up

heat up (http://definr.com/heat up)

     v 1: gain heat or get hot; "The room heated up quickly" [syn: heat,
           hot up] [ant: cool]
     2: make hot or hotter; "heat the soup" [syn: heat] [ant: cool]
     3: make more intense; "Emotions were screwed up" [syn: hot up,
         screw up]