He tends to be rather blunt, has a high opinion of himself, and is easily startled.

It is a gentle and quiet dog who rarely startled easily.

At first, it seemed he could never get comfortable and was easily startled by loud noises.

His hands were still red and he'd startle easily.

Feeling like you can't relax, or being startled easily.

He is easily startled and can contort himself to fit through small spaces.

Easily startled, they read sinister motives in faces where there are none.

That was okay; he specialized in startling the kind of person who didn't startle easily.

He was more given to taking life with a placid optimism that did not startle easily.

Obi-Wan tells the bartender that they startle easily, but will return in greater numbers.