15-Letter Words Matching U____L_________

There are 12 15-letter words that match U____L_________. 5 are common words, such as UNHEALTHINESSES and UNREALISTICALLY. A rarer one is UNFEELINGNESSES. In this set, E is the most frequent open letter (12 words). 7 words contain a doubled letter.

Full list 12

unhealthinessesunrealisticallyunwholesomenessunwillingnessesunworldlinessesunimplementableunchallengeableunemployabilityunparliamentaryultraliberalismunadulteratedlyunfeelingnesses

About this list

Words
12 (5 common words)
Common example
unhealthinesses
Rare example
unfeelingnesses
Doubled letters
7
Ending in S
5
Most frequent letter
E (12)

Questions

How many 15-letter words matching u____l_________ are there?

12. 5 of them are common words.

What is a common example?

UNHEALTHINESSES is among the common words in this set.