9-Letter Words Matching ___U___I_

There are 21 9-letter words that match ___U___I_. 7 are common words, such as CASUISTIC and PNEUMATIC. A rarer one is RHEUMATIZ. In this set, A is the most frequent open letter (14 words). 2 words contain a doubled letter.

Full list 21

casuisticpneumaticpneumoniarheumaticscrunchiesinusitistraumaticamaurosisaraucariaassumpsitpleuriticpneumonicpseudaxissaturniidamauroticaneuploideunuchoidfusulinidlacunariarefusenikrheumatiz

About this list

Words
21 (7 common words)
Common example
casuistic
Rare example
rheumatiz
Doubled letters
2
Ending in S
3
Most frequent letter
A (14)

Questions

How many 9-letter words matching ___u___i_ are there?

21. 7 of them are common words.

What is a common example?

CASUISTIC is among the common words in this set.