Hearing her own name from the old man's mouth, Jennifer was momentarily startled.
He looked momentarily startled to see a woman, but recovered quickly.
He seemed momentarily startled, apparently not having expected the door to open right up.
He was momentarily startled by the ringing of a doorbell.
He looked momentarily startled, then smiled at them both.
The waiter was momentarily startled, but immediately adjusted himself to the situation.
The boys were momentarily startled and broke apart from their huddle.
His two guards were momentarily startled; Stone didn't give them the least opportunity to recover.
He was momentarily startled as men are when they wake up away from home.
A few looked momentarily startled, as if they had never expected to see so notable a figure in the flesh.