12-Letter Words Matching D_O_________

There are 12 12-letter words that match D_O_________. 3 are common words, such as DOORSTEPPING and DROOPINESSES. A rarer one is DROUGHTINESS. In this set, E is the most frequent open letter (12 words). 6 words contain a doubled letter.

Full list 12

doorsteppingdroopinessesdrowsinessesdeoxyribosesdoorknockersduodecilliondeontologiesdeontologistdeoxidationsdeoxygenateddeoxygenatesdroughtiness

About this list

Words
12 (3 common words)
Common example
doorstepping
Rare example
droughtiness
Doubled letters
6
Ending in S
8
Most frequent letter
E (12)

Questions

How many 12-letter words matching d_o_________ are there?

12. 3 of them are common words.

What is a common example?

DOORSTEPPING is among the common words in this set.