15-Letter Words Matching _________E____Y

There are 14 15-letter words that match _________E____Y. 4 are common words, such as HETEROGENEOUSLY and INSTANTANEOUSLY. A rarer one is SUBTERRANEOUSLY. In this set, N is the most frequent open letter (13 words). 4 words contain a doubled letter.

Full list 14

heterogeneouslyinstantaneouslymiscellaneouslyuncomplimentarycholecystectomyunparliamentaryconsentaneouslyepiphenomenallyinterfraternityinteruniversityintransigeantlynonbelligerencysemidocumentarysubterraneously

About this list

Words
14 (4 common words)
Common example
heterogeneously
Rare example
subterraneously
Doubled letters
4
Ending in S
0
Most frequent letter
N (13)

Questions

How many 15-letter words matching _________e____y are there?

14. 4 of them are common words.

What is a common example?

HETEROGENEOUSLY is among the common words in this set.