13-Letter Words Matching _____P___O___

There are 12 13-letter words that match _____P___O___. 2 are common words, such as ANTISPASMODIC and INTERPERSONAL. A rarer one is TRANSPERSONAL. 2 words contain a doubled letter.

Full list 12

antispasmodicinterpersonalbenzophenonesintrapersonallollapaloozasorthopteroidsphotoperiodicphytopathogenquasiperiodicsuperpersonaltetrapyrrolestranspersonal

About this list

Words
12 (2 common words)
Common example
antispasmodic
Rare example
transpersonal
Doubled letters
2
Ending in S
4

Questions

How many 13-letter words matching _____p___o___ are there?

12. 2 of them are common words.

What is a common example?

ANTISPASMODIC is among the common words in this set.