IPA: /ˈtʃælɪndʒɪŋli/
KK: /ˈtʃælɪndʒɪŋli/
In a manner that presents difficulties or obstacles, often requiring effort or skill to overcome.
She approached the problem challengingly, pushing her team to think outside the box.
Challengingly → It is formed from "challenge" (from Old French *chalenge*, meaning to accuse or call to account) and "-ingly" (a suffix used to form adverbs indicating manner). The word "challengingly" means in a manner that presents a challenge or provokes a response.
Think of the word 'challenge' as presenting something that requires effort or skill, and the '-ingly' shows how it is done — so when something is done challengingly, it means it is done in a way that provokes a challenge.