14-Letter Words Matching ____M_____S___

There are 19 14-letter words that match ____M_____S___. 8 are common words, such as ENORMOUSNESSES and HEADMISTRESSES. A rarer one is VENOMOUSNESSES. In this set, E is the most frequent open letter (16 words). 13 words contain a doubled letter.

Full list 19

enormousnessesheadmistressesmetamorphosingpostmistressestaskmistressesuncommonnessesuncompromisinguntimelinessesdisembarrasseddisembarrassesheadmastershipthromboplasticthromboplastindreamfulnessesintimatenessespostmastershipqualmishnessesultimatenessesvenomousnesses

About this list

Words
19 (8 common words)
Common example
enormousnesses
Rare example
venomousnesses
Doubled letters
13
Ending in S
12
Most frequent letter
E (16)

Questions

How many 14-letter words matching ____m_____s___ are there?

19. 8 of them are common words.

What is a common example?

ENORMOUSNESSES is among the common words in this set.