15-Letter Words Matching _____O___S_____

There are 12 15-letter words that match _____O___S_____. 3 are common words, such as CONTROVERSIALLY and NONPROFESSIONAL. A rarer one is RETINOBLASTOMAS. 9 words contain a doubled letter.

Full list 12

controversiallynonprofessionalsubprofessionalorganophosphatepassionlessnesspreprofessionalstandoffishnessemotionlessnessnonprofessorialnonprogressivespsychophysicistretinoblastomas

About this list

Words
12 (3 common words)
Common example
controversially
Rare example
retinoblastomas
Doubled letters
9
Ending in S
5

Questions

How many 15-letter words matching _____o___s_____ are there?

12. 3 of them are common words.

What is a common example?

CONTROVERSIALLY is among the common words in this set.