duelist

[doo-uh-list, dyoo-]

noun

Also especially British, du·el·list.

Origin of duelist

First recorded in 1585–95; duel + -ist

Also called du·el·er; especially British, du·el·ler.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

The duelist may have many motives, but “honor” cannot be one of them!
Her Mother's Secret
Emma D. E. N. Southworth
The man he'd just met, Andrew Jackson, was well known as a duelist.
Shaman
Robert Shea
Van Loo paled slightly; he knew Jack's reputation as a duelist.
The Three Partners
Bret Harte
The Colonel was impressed; he had a duelist's respect for punctuality.
Openings in the Old Trail
Bret Harte
When duelist was a hero, and it was an honor to have 'killed your man.'
Harper's New Monthly Magazine, Vol. 1. No 1, June 1850
Various

1590s, from duel + -ist.