His stupefiedness was evident when he failed to solve the simple math problem.

The magician performed stupefyingly well in his magic show.

The police confiscated several stupefiers during the raid.

The magician's tricks were stupefying.

The stupefying magic trick left the audience in awe.

The movie was a stupefier, leaving the audience in awe.

He stupefied the audience with his incredible magic tricks.

I was stupefied by the unexpected news.

She sang stupendously during the concert.

The stupendousness of the mountain range took my breath away.