This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Plural form of duel.

"Here is the answer to the recent film quiz: Joeseph Conrad wrote the story of two Napoleonic soldiers engaged in duels for decades, which was adapted into a film called “The Duellists” by Ridley Scott."

fuel   

accruals    duals    duels    jewels    renewals