13-Letter Words Matching _M_________S_

There are 19 13-letter words that match _M_________S_. 12 are common words, such as AMBITIOUSNESS and AMORPHOUSNESS. A rarer one is IMMUTABLENESS. In this set, E is the most frequent open letter (19 words). 19 words contain a doubled letter.

Full list 19

ambitiousnessamorphousnessimitativenessimmediatenessimpassivenessimperfectnessimperiousnessimpetuousnessimprecisenessimpressionismimpressionistimpulsivenessimmaterialismambiguousnessimaginarinessimmaterialistimmovablenessimmunochemistimmutableness

About this list

Words
19 (12 common words)
Common example
ambitiousness
Rare example
immutableness
Doubled letters
19
Ending in S
14
Most frequent letter
E (19)

Questions

How many 13-letter words matching _m_________s_ are there?

19. 12 of them are common words.

What is a common example?

AMBITIOUSNESS is among the common words in this set.