duellistic
/ˌdjuːɪˈlɪstɪk/Definitions
1. adjective
relating to or characteristic of a duel or dueling
“The duellistic behavior of the two nobles in the 18th century was seen as a symbol of their aristocratic pride.”
2. noun
the habit or practice of engaging in duels
“The duellistic culture of the 19th century was prevalent among the upper class.”