11-Letter Words Matching ____U__O___

There are 14 11-letter words that match ____U__O___. 7 are common words, such as CIRCUMPOLAR and EXECUTIONER. A rarer one is UBIQUINONES. In this set, S is the most frequent open letter (11 words). 5 words contain a doubled letter.

Full list 14

circumpolarexecutionermilquetoastnonsupportspresupposedpresupposesunequivocalcinquefoilscircumsolardiffusionalconfusionalmisbuttonednoncustomerubiquinones

About this list

Words
14 (7 common words)
Common example
circumpolar
Rare example
ubiquinones
Doubled letters
5
Ending in S
4
Most frequent letter
S (11)

Questions

How many 11-letter words matching ____u__o___ are there?

14. 7 of them are common words.

What is a common example?

CIRCUMPOLAR is among the common words in this set.