15-Letter Words Matching M________U_____

There are 16 15-letter words that match M________U_____. 6 are common words, such as MELLIFLUOUSNESS and MERITORIOUSNESS. A rarer one is MOUNTAINOUSNESS. In this set, N is the most frequent open letter (16 words). 7 words contain a doubled letter.

Full list 16

mellifluousnessmeritoriousnessmischievousnessmisconstructionmonounsaturatedmultilingualismmagnanimousnessmercaptopurinesmistrustfulnessmacroevolutionsmethoxyfluranesmicroevolutionsmisattributionsmonomolecularlymonounsaturatesmountainousness

About this list

Words
16 (6 common words)
Common example
mellifluousness
Rare example
mountainousness
Doubled letters
7
Ending in S
12
Most frequent letter
N (16)

Questions

How many 15-letter words matching m________u_____ are there?

16. 6 of them are common words.

What is a common example?

MELLIFLUOUSNESS is among the common words in this set.