13-Letter Words Containing OSO

There are 20 13-letter words that contain OSO. 5 are common words, such as PHILOSOPHICAL and PHILOSOPHIZED. A rarer one is SUPERVIRTUOSO. In this set, I is the most frequent open letter (17 words). 3 words contain a doubled letter.

Full list 20

philosophicalphilosophizedphilosophizerphilosophizespsychosomaticanthroposophychondriosomesdeipnosophistgymnosophistsprosopopoeiaschromosomallyimmunosorbentisochromosomenosologicallyphilosophisedphilosophisespolyribosomalpolyribosomesprosopographysupervirtuoso

About this list

Words
20 (5 common words)
Common example
philosophical
Rare example
supervirtuoso
Doubled letters
3
Ending in S
6
Most frequent letter
I (17)

Questions

How many 13-letter words containing oso are there?

20. 5 of them are common words.

What is a common example?

PHILOSOPHICAL is among the common words in this set.