— challengingly , adv.
/chal"in jing/ , adj.
1. offering a challenge; testing one's ability, endurance, etc: a challenging course; a challenging game.
2. stimulating, interesting, and thought-provoking: a challenging suggestion.
3. provocative; intriguing: a challenging smile.
[ 1300-50; ME, as ger.; 1835-45 for def. 1; see CHALLENGE, -ING 2 ]