15-Letter Words Containing DU

There are 56 15-letter words that contain DU. 15 are common words, such as ASSIDUOUSNESSES and CREDULOUSNESSES. A rarer one is UNENDURABLENESS. In this set, I is the most frequent open letter (50 words). 16 words contain a doubled letter.

Full list 56

Common words

assiduousnessescredulousnessesindividualisticindividualitiesindividualizingindustrializingindustriousnessoverindulgencesoverproductionsreintroductionsseductivenessessuperconducting
assiduousnessescredulousnessesindividualisticindividualitiesindividualizingindustrializingindustriousnessoverindulgencesoverproductionsreintroductionsseductivenessessuperconductingsuperconductivesuperconductorsunderproductioncoeducationallyduplicitousnesseducationalistsincredulousnessperdurabilitiesphotoconductionreproducibilitysuperindividualantieducationalconducivenessescotransductionsdeciduousnessesdeductibilitiesdeindustrializehyperproductionimmunomodulatorindividualisingindubitablenessindustrialisingineducabilitiesinterindividualintermodulationmedulloblastomanonreproduciblenonreproductiveoxidoreductasespendulousnessesphotoconductivephotoduplicatedphotoduplicatesphotoinductionsphotoproductionphotoreductionspostproductionsreductivenessesreduplicativelyreindustrializesuperinductionsunadulteratedlyundutifulnessesunendurableness

About this list

Words
56 (15 common words)
Common example
assiduousnesses
Rare example
unendurableness
Doubled letters
16
Ending in S
29
Most frequent letter
I (50)

Questions

How many 15-letter words containing du are there?

56. 15 of them are common words.

What is a common example?

ASSIDUOUSNESSES is among the common words in this set.