adverb

1. In no way; not at all

interjection

1. Absolutely not; under no circumstances.

   “"Touch that weird rock over there, I dare you!" "No way!"”

2. Indicates astonished disbelief.

   “"He's hitting 400 for two months? No way!" / "Way. Actually 411."”

Synonyms: fat chance, no fear, not a chance, not on your life, unbelievable, what the, what the fuck, no