hellishly

/ˈhɛlɪʃli/
adverb
  1. In an extremely unpleasant, difficult, or painful way.
    • She found the traffic hellishly slow on her way to the airport.
    • The hike was hellishly steep, and we were exhausted by noon.
    • The summer heat was hellishly oppressive, even in the shade.
  2. Used as an intensifier meaning 'extremely' or 'very much'.
    • That math problem was hellishly complicated for a beginner.
    • The movie was hellishly long, running over three hours.
    • He was hellishly busy at work and barely had time to eat.
Antonyms
What does "hellishly" mean? | whatsthatwordmean | whatsthatwordmean