Duner or Dunner: How To spell?

The word Duner is misspelled against Dunner, a noun meaning "One employed in soliciting the payment of debts."

Dunner has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings du & er which should not be misspelled with single 'N'
Wrong Spelling: du-n-er
Correct Spelling: du-nn-er
Check more misspelled words of Dunner to spell it correct.