2 Words to use with disconcert

The horrible cannon struggles, advances, backs, strikes right, strikes left, retreats, passes by, disconcerts expectation, grinds up obstacles, crushes men like flies.

"The torch of reason completely extinguished, the victim of senseless vows has brought the piece to an end by a catastrophe which alarms modesty, astonishes nature and disconcerts religion.

2 Words to use with  disconcert