frighteningly

adv

1. In a frightening or terrifying manner.
2. Very; beyond usual expectation so as to cause surprise or concern.

   “The pitcher that was set before me was frighteningly large.”

   “Risk is everywhere.[…]For each [kind] there is a frighteningly precise measurement of just how likely it is to jump from the shadows and get you. “The Norm Chronicles”[…]aims to help data-phobes find their way through this blizzard of risks.”