ADJ (行为)极端的,疯狂的,狂躁的 If you describe someone's behaviour as maniacal, you mean that it is extreme, violent, or very determined, as if the person were insane. (行为)极端的,疯狂的,狂躁的 [disapproval]
He was almost maniacal in his pursuit of sporting records.
他近乎发疯般地追求着打破体育纪录。
She is hunched forward over the wheel with a maniacal expression.