14-Letter Words Matching U_________I___

There are 23 14-letter words that match U_________I___. 4 are common words, such as UNDERCLOTHINGS and UNDERSTANDINGS. A rarer one is UNSYSTEMATIZED. In this set, T is the most frequent open letter (21 words). 6 words contain a doubled letter.

Full list 23

underclothingsunderstandingsunintelligibleunintelligiblyunacclimatizedunalphabetizeduncrystallizedunostentatiousunreproducibleunsystematicalultracivilizedultraefficientultrapracticalultrarightistsultraroyalistsunanesthetizeduncomputerizedunderpaintingsunderstaffingsunromanticizedunstandardizedunsynchronizedunsystematized

About this list

Words
23 (4 common words)
Common example
underclothings
Rare example
unsystematized
Doubled letters
6
Ending in S
7
Most frequent letter
T (21)

Questions

How many 14-letter words matching u_________i___ are there?

23. 4 of them are common words.

What is a common example?

UNDERCLOTHINGS is among the common words in this set.