How do you describe a heated argument?

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. If someone gets heated about something, they get angry and excited about it.

How do you describe a discussion?

Here are some adjectives for discussion: quick and expensive, brief follow-on, considerable sartorial, long and sufficiently idiotic, interminable and apparently fruitless, judicious and balanced, slightly lengthy, informal roundtable, animated but fruitless, open and frequent, exciting and crucial, long and …

How do you describe a good conversation?

Here are some adjectives for conversation: entire forthcoming, increasingly esoteric, heretofore simple, fully private, suddenly meaningful, angry, animated, good and reasonably cheerful, uninterrupted, private, swift, low-pitched, stilted, polite, oddest four-sided, intelligible and enjoyable, constitutionally honest.