He had a bad temper, had lots of bad habits and was sometimes violent.

他脾气不好，有很多坏习惯，有时还很暴力。

youdao

Age has chastened his violent temper.

年龄缓和了他的暴躁脾气。

youdao

He had a violent temper and kept a hatchet at his bedside for burglars and would knock a man down instead of going to law, and I once saw him hunt a group of men with a horsewhip.

他的脾性暴烈，在自己的床边放了一把斧头防盗，而且会亲手把对方击倒，而不会用法律解决问题，我也曾经见过他用马鞭追捕一群人。

youdao

His violent temper and domineering personality were notorious in the Braintree area of Essex.

BBC: David Oakes: Double murderer had 'violent reputation'

That number found that Moussaoui's "unstable early childhood and dysfunctional family" resulted in him leaving home at a young age, and that Moussaoui's father had a violent temper and abused his family.

CNN: Moussaoui jury split on mitigating factors

Scientists have looked at anger and violence, though, and discovered genetic variations, expressed as concentrations of a particular messenger molecule in the brain, that are both congenital and predisposing to a violent temper.

ECONOMIST: Modern neuroscience is eroding the idea of free will