15-Letter Words Matching I________U_____

There are 26 15-letter words that match I________U_____. 8 are common words, such as ILLUSTRIOUSNESS and IMPECUNIOUSNESS. A rarer one is INTRAVASCULARLY. In this set, N is the most frequent open letter (25 words). 19 words contain a doubled letter.

Full list 26

Common words

illustriousnessimpecuniousnessincongruousnessinconspicuouslyindustriousnessinjudiciousnessintellectualismintellectualizeichthyosaurusesignominiousnessincommensurableincredulousness
illustriousnessimpecuniousnessincongruousnessinconspicuouslyindustriousnessinjudiciousnessintellectualismintellectualizeichthyosaurusesignominiousnessincommensurableincredulousnessintellectualityintercommunionsintramuscularlyirreligiousnessichthyosauriansimmunomodulatorincommensurablyintellectualistinterculturallyinterdiffusionsinterinfluencedinterinfluencesintracellularlyintravascularly

About this list

Words
26 (8 common words)
Common example
illustriousness
Rare example
intravascularly
Doubled letters
19
Ending in S
13
Most frequent letter
N (25)

Questions

How many 15-letter words matching i________u_____ are there?

26. 8 of them are common words.

What is a common example?

ILLUSTRIOUSNESS is among the common words in this set.