13-Letter Words Matching _O_________M_

There are 22 13-letter words that match _O_________M_. 6 are common words, such as COLLECTIVISMS and CONSERVATISMS. A rarer one is VOLUNTARYISMS. In this set, S is the most frequent open letter (21 words). 8 words contain a doubled letter.

Full list 22

collectivismsconservatismscounterclaimssomnambulismstonsillectomyvolunteerismscommensalismshomomorphismsmorphophonemenoctambulismspolymorphismsconnubialismshomothallismsmonomorphismsmonorchidismsnonclassroomsnonpetroleumspoikilothermspolycentrismspolyglottismspostvasectomyvoluntaryisms

About this list

Words
22 (6 common words)
Common example
collectivisms
Rare example
voluntaryisms
Doubled letters
8
Ending in S
19
Most frequent letter
S (21)

Questions

How many 13-letter words matching _o_________m_ are there?

22. 6 of them are common words.

What is a common example?

COLLECTIVISMS is among the common words in this set.