13-Letter Words Matching ________OS___

There are 17 13-letter words that match ________OS___. 5 are common words, such as MISDIAGNOSING and NONDISCLOSURE. A rarer one is SUPERCOLOSSAL. In this set, I is the most frequent open letter (14 words). 4 words contain a doubled letter.

Full list 17

misdiagnosingnondisclosuresuperimposingunderexposingunderexposureanfractuosityanticorrosiveimpecuniosityprediagnosticanticorrosioncounterposingisochromosomemicroporosityodontoglossumphagocytosingrhodochrositesupercolossal

About this list

Words
17 (5 common words)
Common example
misdiagnosing
Rare example
supercolossal
Doubled letters
4
Ending in S
0
Most frequent letter
I (14)

Questions

How many 13-letter words matching ________os___ are there?

17. 5 of them are common words.

What is a common example?

MISDIAGNOSING is among the common words in this set.