Stunning

Part of speech: adjective (a.)

1. Overpowering consciousness; overpowering the senses; especially, overpowering the sense of hearing; confounding with noise.

2. Striking or overpowering with astonishment, especially on account of excellence; as, stunning poetry. [Slang] C. Kingsley. -- Stun"ning*ly, adv. [Slang]