Everyone was suddenly afraid that somebody else knew something she didn't.

The man's face darkened, and the little girl was suddenly afraid.

She pulled away from him just a little, suddenly afraid to let herself get too close.

One or two of them squinted at him, suddenly afraid.

She was suddenly afraid in some new and deadly way.

She knew other things as well and was suddenly afraid.

I was suddenly afraid to see the bridge, the scene of the crime.

They were suddenly afraid that the criticism of their own system would be too obvious.

Without knowing why, he felt suddenly afraid of that smiling face.

Her eyes widened now, as if she were suddenly afraid of him.