torturously

/ˈtɔːrtʃərəsli/
adverb
  1. In a way that causes great physical or mental pain; extremely painfully or distressingly.
    • The hours passed torturously slowly as she waited for news.
    • He torturously dragged himself across the desert, one step at a time.
    • The speech was torturously long, and the audience grew restless.
Antonyms