He stiffened instantly at the thought.

She stiffened instantly when she realized his intent.

His metal harness instantly stiffened and supported him, holding his head high.

Her father stiffened instantly, resentment and anger in every line of his face.

Her body instantly stiffened, and she gave a hoarse cry.

She stiffened instantly, and drew her pistol.

The toddler instantly stiffened and went as rigid as a board.

Diana stiffened instantly, her face cool and expressionless when she turned to Gennie.

Angela stiffened instantly, so he took that as a yes.

It stiffened instantly and Fortunato felt sweat break on his forehead.