| Verb | 1. | hot up - gain heat or get hot; "The room heated up quickly"change state, turn - undergo a transformation or a change of position or action; "We turned from Socialism to Capitalism"; "The people turned against the President when he stole the election" overheat - get excessively and undesirably hot; "The car engines overheated" fry - be excessively hot; "If the children stay out on the beach for another hour, they'll be fried" | |
| 2. | hot up - make more intense; "Emotions were screwed up"compound, deepen, intensify, heighten - make more intense, stronger, or more marked; "The efforts were intensified", "Her rudeness intensified his dislike for her"; "Potsmokers claim it heightens their awareness"; "This event only deepened my convictions" | |
| 3. | hot up - make more powerful; "he souped up the old cars"modify - make less severe or harsh or extreme; "please modify this letter to make it more polite"; "he modified his views on same-gender marriage" | |