10-Letter Words Matching D_______U_

There are 27 10-letter words that match D_______U_. 7 are common words, such as DELIGHTFUL and DELPHINIUM. A rarer one is DRUPACEOUS. In this set, I is the most frequent open letter (24 words). 3 words contain a doubled letter.

Full list 27

Common words

delightfuldelphiniumderailleurdiaphanousdisastrousdisdainfuldysprosiumdespitefuldiaconicumdiadromousdidynamousdimorphous
delightfuldelphiniumderailleurdiaphanousdisastrousdisdainfuldysprosiumdespitefuldiaconicumdiadromousdidynamousdimorphousdipetalousdiphyllousdiplodocusdiscobolusdisemboguedisepalousdisgustfuldispermousdistichousdecapodousdeltoideusdespiteousdispiteousdropperfuldrupaceous

About this list

Words
27 (7 common words)
Common example
delightful
Rare example
drupaceous
Doubled letters
3
Ending in S
17
Most frequent letter
I (24)

Questions

How many 10-letter words matching d_______u_ are there?

27. 7 of them are common words.

What is a common example?

DELIGHTFUL is among the common words in this set.