Answer: duelled

AnswerCrossword Clue
DUELLEDFought for honor.
DUELLEDAped Burr and Hamilton
DUELLEDFought it out, in Britain
DUELLEDHamilton and Burr did it
DUELLEDSettled a dispute, in a way
DUELLEDFought a la the Three Musketeers
duelledto fight in a duel
duelledplanned combat between two persons
duelledDUEL, to fight formally