12-Letter Words Matching __M___U_____

There are 15 12-letter words that match __M___U_____. 6 are common words, such as DUMBFOUNDING and HUMOROUSNESS. A rarer one is NUMINOUSNESS. In this set, S is the most frequent open letter (14 words). 10 words contain a doubled letter.

Full list 15

dumbfoundinghumorousnessimmeasurableimmeasurablytimorousnesstumultuouslycumbrousnessimmensurableluminousnessnumerousnessunmeasurablecomminutionsdumbfoundershomoiousiansnuminousness

About this list

Words
15 (6 common words)
Common example
dumbfounding
Rare example
numinousness
Doubled letters
10
Ending in S
9
Most frequent letter
S (14)

Questions

How many 12-letter words matching __m___u_____ are there?

15. 6 of them are common words.

What is a common example?

DUMBFOUNDING is among the common words in this set.