impulsive

Symptoms can include difficulties concentrating and sitting still, having high energy levels and being impulsive.

But they can also diminish the appreciation of consequences, leading to impulsive behaviour - according to academics.

You have to keep reminding yourself that she’s drunk and impulsive while he, rather nonsensically, holds his feelings inside until the exact moment he should shut up and save himself.

They say it may well have been an impulsive act of revenge by a man whose power was waning.

This Superman is all impulsive energy, much like his unhousebroken puppy, who also wears a cape and tramples on things when he tries to help.