After months of missed payments, the landlord dunned the tenant with escalating notices.

The company sent multiple dunnings to the client before referring the account to collections.

After missing three payments, she received a dunning from the creditor demanding immediate repayment.

The landlord kept dunning the tenant for overdue rent until they finally agreed on a payment plan.

The company received several duns from its suppliers after the invoice deadlines were missed.

The collector duns late customers until the debt is paid.

During our trip, we stopped at Bridge of Dun to take pictures of the old stone bridge and the surrounding countryside.

Barnby Dun lies quietly beside the River Don, its history tied to the Kirk Sandall parish within the Doncaster borough of South Yorkshire (OS grid ref SE6109).

When annotating classical Chinese texts, scholars often mark pauses with a dun comma to reflect original phrasing.

While editing the manuscript, she accidentally deleted several dun commas, which changed the meaning of the sentence.