15-Letter Words Matching ____I_____N____

There are 14 15-letter words that match ____I_____N____. 5 are common words, such as EGALITARIANISMS and INSTITUTIONALLY. A rarer one is PLATINOCYANIDES. In this set, T is the most frequent open letter (14 words). 6 words contain a doubled letter.

Full list 14

egalitarianismsinstitutionallynotwithstandingprohibitionistsutilitarianismsgravitationallyinspirationallyoverinfluentialtrinitrobenzenechorioallantoicchorioallantoismultimillennialnonsimultaneousplatinocyanides

About this list

Words
14 (5 common words)
Common example
egalitarianisms
Rare example
platinocyanides
Doubled letters
6
Ending in S
6
Most frequent letter
T (14)

Questions

How many 15-letter words matching ____i_____n____ are there?

14. 5 of them are common words.

What is a common example?

EGALITARIANISMS is among the common words in this set.