12-Letter Words Matching _I________U_

There are 23 12-letter words that match _I________U_. 7 are common words, such as DISCOURTEOUS and DISINGENUOUS. A rarer one is VIRULIFEROUS. In this set, S is the most frequent open letter (20 words). 4 words contain a doubled letter.

Full list 23

discourteousdisingenuousdisputatiousdisregardfulhippopotamusmisdemeanoursimultaneouscinemathequecircumfluouscirrocumuluscirrostratusdiatomaceousdiverticulumhibernaculummicronucleusnielsbohriumnimbostratusxiphisternummicrosporousmicrovillouspicornavirustitaniferousviruliferous

About this list

Words
23 (7 common words)
Common example
discourteous
Rare example
viruliferous
Doubled letters
4
Ending in S
16
Most frequent letter
S (20)

Questions

How many 12-letter words matching _i________u_ are there?

23. 7 of them are common words.

What is a common example?

DISCOURTEOUS is among the common words in this set.