12-Letter Words Matching _U________U_

There are 19 12-letter words that match _U________U_. 6 are common words, such as CUMULONIMBUS and MUCILAGINOUS. A rarer one is SUCCEDANEOUS. In this set, S is the most frequent open letter (18 words). 4 words contain a doubled letter.

Full list 19

cumulonimbusmucilaginousmultifarioussubconscioussubcutaneoussuperciliousburseraceousfurfuraceousluminiferousmultiflorousquadrumanousquinquenniumsudoriferoussuperpremiumsuperstratumsuppositiouscunnilinctuseurythermoussuccedaneous

About this list

Words
19 (6 common words)
Common example
cumulonimbus
Rare example
succedaneous
Doubled letters
4
Ending in S
16
Most frequent letter
S (18)

Questions

How many 12-letter words matching _u________u_ are there?

19. 6 of them are common words.

What is a common example?

CUMULONIMBUS is among the common words in this set.