15-Letter Words Matching ____N_________Y

There are 31 15-letter words that match ____N_________Y. 12 are common words, such as CHRONOLOGICALLY and DEMONSTRATIVELY. A rarer one is SPLENDIFEROUSLY. In this set, I is the most frequent open letter (31 words). 13 words contain a doubled letter.

Full list 31

Common words

chronologicallydemonstrativelydisinterestedlyimpenetrabilityinconsideratelyinconspicuouslyinfinitesimallynoninflammatorynoninflationaryparentheticallytechnologicallyunconditionally
chronologicallydemonstrativelydisinterestedlyimpenetrabilityinconsideratelyinconspicuouslyinfinitesimallynoninflammatorynoninflationaryparentheticallytechnologicallyunconditionallyactinochemistrydemonstrabilitydisenchantinglyimmunochemistryimmunologicallyimponderabilityinconsolabilitymelancholicallyphrenologicallyprognosticatoryreconcilabilityserendipitouslyunmanageabilitydisinflationaryimmunopathologyorientationallypalynologicallyremonstrativelysplendiferously

About this list

Words
31 (12 common words)
Common example
chronologically
Rare example
splendiferously
Doubled letters
13
Ending in S
0
Most frequent letter
I (31)

Questions

How many 15-letter words matching ____n_________y are there?

31. 12 of them are common words.

What is a common example?

CHRONOLOGICALLY is among the common words in this set.