He didn't move, there was no look on his face to cause alarm.

How high does it have to be to cause alarm?

Anything new is likely to cause alarm or create suspicion.

"If the little amount of information caused alarm, I certainly didn't know about it."

"So far, we have seen no information that would cause alarm," he said.

He had been a little sick, Tom admitted, but nothing to cause alarm.

Because of it, even with nothing else occurring to cause alarm, she could not get back to sleep.

He did not wish to cause alarm if there was no need, especially when rescue seemed so near.

Within the range of his vision there was nothing apparent that might cause alarm.

But the Americans are coming and it's causing great alarm in some circles.