insanely

adverb2

1. •
   In an insane manner; not sanely.

   • Gloating silently, she laved handfuls of hot sand over her, her mind alternating sanely and insanely. — 1907
2. •
   To a great degree; very much.

   • That ramp is insanely difficult to jump.
   • Disney has some insanely fun roller coasters.