challengingly

/ˈtʃæləndʒɪŋli/
adverb
  1. In a way that is difficult and tests your abilities.
    • The puzzle was challengingly complex, requiring hours of concentration.
    • The course was designed challengingly to push students to their limits.
    • She looked at him challengingly, daring him to disagree.
Antonyms
What does "challengingly" mean? | whatsthatwordmean | whatsthatwordmean