14-Letter Words Matching __AD__________

There are 20 14-letter words that match __AD__________. 8 are common words, such as HEADMISTRESSES and HEADQUARTERING. A rarer one is TRADITIONALIZE. In this set, S is the most frequent open letter (17 words). 7 words contain a doubled letter.

Full list 20

headmistressesheadquarteringinadvisabilityquadrilateralsquadruplicatedquadruplicatestraditionalismtraditionalistheadmastershipinadequatenessinadvertenciesquadrillionthsgladsomenessesheadlessnessesquadrumviratesreadablenessesroadworthinessshadowgraphiesstadtholderatetraditionalize

About this list

Words
20 (8 common words)
Common example
headmistresses
Rare example
traditionalize
Doubled letters
7
Ending in S
12
Most frequent letter
S (17)

Questions

How many 14-letter words matching __ad__________ are there?

20. 8 of them are common words.

What is a common example?

HEADMISTRESSES is among the common words in this set.