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WordReference Random House Learner's Dictionary of American English © 2024dun1 /dʌn/USA pronunciation v. [~ + object], dunned, dun•ning. - Businessto make repeated demands upon, esp. for the payment of a debt:kept dunning us about the overdue bill.
dun2 /dʌn/USA pronunciation adj. - Dog and Cat Breedsdull grayish brown or grayish yellow.
WordReference Random House Unabridged Dictionary of American English © 2024dun1 (dun),USA pronunciation v., dunned, dun•ning, n. v.t. - Businessto make repeated and insistent demands upon, esp. for the payment of a debt.
n. - a person, esp. a creditor, who duns another.
- Businessa demand for payment, esp. a written one.
- origin, originally obscure 1620–30
- Dog and Cat Breedsdull, grayish brown.
- dark;
gloomy.
n. - a dun color.
- Dog and Cat Breedsa dun-colored horse with a black mane and tail.
- mayfly.
- Sport[Angling.]See dun fly.
- bef. 1000; Middle English dun(ne), Old English dunn; cognate with Old Saxon dun
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