1.
A heated discussion or quarrel is one where the people involved are angry and excited.
It was a very heated argument and they were shouting at each other...
? calm
ADJ
2.
If someone gets heated about something, they get angry and excited about it.
You will understand that people get a bit heated about issues such as these...
ADJ: v-link ADJ about/over n
• heatedly
The crowd continued to argue heatedly about the best way to tackle the problem.
ADV: ADV with v