15-Letter Words Matching U________O_____

There are 12 15-letter words that match U________O_____. 7 are common words, such as UNCONDITIONALLY and UNDEREMPLOYMENT. A rarer one is UNTRADITIONALLY. In this set, L is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 12

unconditionallyunderemploymentunexceptionableunexceptionablyunexceptionallyunintentionallyunobjectionableultramicrometerultramicroscopeultramicrotomesunchronologicaluntraditionally

About this list

Words
12 (7 common words)
Common example
unconditionally
Rare example
untraditionally
Doubled letters
4
Ending in S
1
Most frequent letter
L (12)

Questions

How many 15-letter words matching u________o_____ are there?

12. 7 of them are common words.

What is a common example?

UNCONDITIONALLY is among the common words in this set.