12-Letter Words Matching ____N_____U_

There are 18 12-letter words that match ____N_____U_. 4 are common words, such as ADVANTAGEOUS and ADVENTITIOUS. A rarer one is UNCENSORIOUS. In this set, I is the most frequent open letter (17 words). 1 words contain a doubled letter.

Full list 18

advantageousadventitiousdisingenuousostentatiousgeraniaceousinfundibulumloganiaceousluminiferousperinephriumresiniferoussapindaceouscementitiousechinococcusnonunanimousseleniferousseminiferoustitaniferousuncensorious

About this list

Words
18 (4 common words)
Common example
advantageous
Rare example
uncensorious
Doubled letters
1
Ending in S
16
Most frequent letter
I (17)

Questions

How many 12-letter words matching ____n_____u_ are there?

18. 4 of them are common words.

What is a common example?

ADVANTAGEOUS is among the common words in this set.