15-Letter Words Matching ____I_________Y

There are 34 15-letter words that match ____I_________Y. 11 are common words, such as ARCHITECTURALLY and CARCINOGENICITY. A rarer one is SILVICULTURALLY. In this set, A is the most frequent open letter (33 words). 20 words contain a doubled letter.

Full list 34

Common words

architecturallycarcinogenicitycardiopulmonaryconfidentialityinstitutionallymarriageabilitynondisciplinarypessimisticallyphysiologicallyplenipotentiaryprehistoricallyarchiepiscopacy
architecturallycarcinogenicitycardiopulmonaryconfidentialityinstitutionallymarriageabilitynondisciplinarypessimisticallyphysiologicallyplenipotentiaryprehistoricallyarchiepiscopacycharismaticallydistinguishablyfideicommissarygravimetricallygravitationallyhorticulturallyinquisitoriallyinspirationallymultitudinouslysophisticatedlycholinergicallycombinatoriallycommiseratinglydorsiventralitynonbiologicallyovoviviparouslyphysiopathologyplanimetricallyplatitudinouslyprefigurativelypremillenniallysilviculturally

About this list

Words
34 (11 common words)
Common example
architecturally
Rare example
silviculturally
Doubled letters
20
Ending in S
0
Most frequent letter
A (33)

Questions

How many 15-letter words matching ____i_________y are there?

34. 11 of them are common words.

What is a common example?

ARCHITECTURALLY is among the common words in this set.