- (transitive) to press or importune (a debtor) for the payment of a debt
- a person, esp a hired agent, who importunes another for the payment of a debt
- a demand for payment, esp one in writing
WordReference Random House Learner's Dictionary of American English © 2026
dun1 /dʌn/USA pronunciation
v. [~ + object], dunned, dun•ning.
dun2 /dʌn/USA pronunciation adj.
WordReference Random House Unabridged Dictionary of American English © 2026- 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.
dun1
(dun),USA pronunciation v., dunned, dun•ning, n.
v.t.
n.
dun2 (dun),USA pronunciation adj.
n.
dun′ness, 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
dun2 (dun),USA pronunciation adj.
- 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
Collins Concise English Dictionary © HarperCollins Publishers::
dun /dʌn/ vb (duns, dunning, dunned)
dun /dʌn/ n
- a brownish-grey colour
- a horse of this colour
- an immature adult mayfly (the subimago), esp one of the genus Ephemera
- an artificial fly imitating this or a similar fly
- of a dun colour
- dark and gloomy
'dunning' also found in these entries (note: many are not synonyms or translations):