14-Letter Words Matching ____DO________

There are 18 14-letter words that match ____DO________. 2 are common words, such as PREADOLESCENCE and PSEUDOSCIENCES. A rarer one is SUBADOLESCENTS. In this set, E is the most frequent open letter (16 words). 3 words contain a doubled letter.

Full list 18

preadolescencepseudoscienceslepidopteristsmalodorousnessendodonticallygonadotrophinsoverdocumentedoverdominancesparadoxicalitypreadolescentspseudoclassicspseudomorphismpseudomorphouspseudonymitiespseudonymouslypseudopregnantpseudoscorpionsubadolescents

About this list

Words
18 (2 common words)
Common example
preadolescence
Rare example
subadolescents
Doubled letters
3
Ending in S
10
Most frequent letter
E (16)

Questions

How many 14-letter words matching ____do________ are there?

18. 2 of them are common words.

What is a common example?

PREADOLESCENCE is among the common words in this set.