infernally

/ɪnˈfɜrnəli/
adverb
  1. In a way that is extremely annoying, unpleasant, or difficult.
    • The traffic was infernally heavy, making us an hour late.
    • The printer is infernally slow today.
    • That song has been stuck in my head all day, and it's infernally catchy.
  2. In a manner resembling hell; extremely or diabolically.
    • The heat in the desert was infernally hot.
    • He grinned infernally as he revealed his evil plan.
    • The villain laughed infernally before disappearing into the shadows.
Antonyms
What does "infernally" mean? | whatsthatwordmean | whatsthatwordmean