15-Letter Words Matching ___AN__________

There are 27 15-letter words that match ___AN__________. 4 are common words, such as EXPANSIVENESSES and HUMANITARIANISM. A rarer one is TRIANGULARITIES. In this set, I is the most frequent open letter (23 words). 5 words contain a doubled letter.

Full list 27

Common words

expansivenesseshumanitarianismintangibilitiestyrannosaurusesagranulocytosesagranulocytosismelancholicallyoceanographicalorganophosphateunmanageabilitydemandingnessesexpandabilities
expansivenesseshumanitarianismintangibilitiestyrannosaurusesagranulocytosesagranulocytosismelancholicallyoceanographicalorganophosphateunmanageabilitydemandingnessesexpandabilitiesexpansibilitiesexsanguinationsgynandromorphicinfantilizationnonantagonisticorganochlorinesorganomercurialorganometallicsparanormalitiesrecanalizationsremanufacturersremanufacturingromanticizationtelangiectasiastriangularities

About this list

Words
27 (4 common words)
Common example
expansivenesses
Rare example
triangularities
Doubled letters
5
Ending in S
16
Most frequent letter
I (23)

Questions

How many 15-letter words matching ___an__________ are there?

27. 4 of them are common words.

What is a common example?

EXPANSIVENESSES is among the common words in this set.