12-Letter Words Matching ____L_____U_

There are 19 12-letter words that match ____L_____U_. 5 are common words, such as CUMULONIMBUS and INFELICITOUS. A rarer one is VIRULIFEROUS. In this set, O is the most frequent open letter (17 words). 6 words contain a doubled letter.

Full list 19

cumulonimbusinfelicitousinsalubriousmucilaginoussimultaneousargillaceouscapillaceouscarillonneurcorollaceouscotyledonouspetaliferouspyroligneousunnilpentiumunnilquadiumankylosauruscomplicitousnonglamoroussemilustrousviruliferous

About this list

Words
19 (5 common words)
Common example
cumulonimbus
Rare example
viruliferous
Doubled letters
6
Ending in S
16
Most frequent letter
O (17)

Questions

How many 12-letter words matching ____l_____u_ are there?

19. 5 of them are common words.

What is a common example?

CUMULONIMBUS is among the common words in this set.