当我要求还钱时，他变得非常凶恶。

When I asked for the money, he turned really ___nasty.

我听到另一个房间传来凶恶的叫喊声。

I heard a ___nasty voice shouting from the other room.

争论迅速变得凶恶且暴力。

The argument quickly turned ___nasty and violent.