The sudden sense of danger sharply heightened her arousal.

His senses heightened, as they always did when he was on the hunt.

When it was pitch-dark, his eyes adjusted and his senses heightened even further.

When used in a Congressional colloquy, as we have just seen, the term's double sense heightens the offense.

His senses heightened by stress, he noted the air lacked the scents of a living ship.

A few hours later, Maloney's sense of urgency had heightened considerably.

The sense of danger always heightened his perception.

Her senses still heightened by the previous night's transformation, she recognized him long before she saw him.

As the delay grew longer, the sense of unreality heightened.

The sense of being at war, the excitement and danger of it, heightened this for him.