15-Letter Words Matching ___I_U_________

There are 14 15-letter words that match ___I_U_________. 4 are common words, such as AGRICULTURALIST and ANTIQUARIANISMS. A rarer one is SOLITUDINARIANS. In this set, S is the most frequent open letter (14 words). 5 words contain a doubled letter.

Full list 14

agriculturalistantiquarianismsassiduousnesseslatitudinariansagribusinessmanagribusinessmenambiguousnessesantisubversionsantisubversivesantituberculousdeciduousnessesrevisualizationsemisubmersiblesolitudinarians

About this list

Words
14 (4 common words)
Common example
agriculturalist
Rare example
solitudinarians
Doubled letters
5
Ending in S
9
Most frequent letter
S (14)

Questions

How many 15-letter words matching ___i_u_________ are there?

14. 4 of them are common words.

What is a common example?

AGRICULTURALIST is among the common words in this set.