13-Letter Words Starting With MAS

There are 16 13-letter words that start with MAS. 5 are common words, such as MASCULINITIES and MASSIVENESSES. A rarer one is MASTOIDITISES. In this set, I is the most frequent open letter (13 words). 4 words contain a doubled letter.

Full list 16

masculinitiesmassivenessesmastermindingmasterstrokesmasturbationsmasculinenessmasterclassesmasterfulnessmastigophoranmastoidectomymastoiditidesmasculinisingmasculinizingmastersingersmasticatoriesmastoiditises

About this list

Words
16 (5 common words)
Common example
masculinities
Rare example
mastoiditises
Doubled letters
4
Ending in S
11
Most frequent letter
I (13)

Questions

How many 13-letter words starting with mas are there?

16. 5 of them are common words.

What is a common example?

MASCULINITIES is among the common words in this set.