15-Letter Words Matching ___I____O______

There are 21 15-letter words that match ___I____O______. 3 are common words, such as ACRIMONIOUSNESS and MERITORIOUSNESS. A rarer one is SEMIPORNOGRAPHY. In this set, T is the most frequent open letter (18 words). 5 words contain a doubled letter.

Full list 21

acrimoniousnessmeritoriousnessunrighteousnessantinationalistefficaciousnessexhibitionisticschistosomiasesschistosomiasisantiaphrodisiacantiferromagnetantipornographyantirationalismantirationalistantirationalitylegislatorshipsradioautographsradioautographyradiostrontiumssedimentologiessedimentologistsemipornography

About this list

Words
21 (3 common words)
Common example
acrimoniousness
Rare example
semipornography
Doubled letters
5
Ending in S
10
Most frequent letter
T (18)

Questions

How many 15-letter words matching ___i____o______ are there?

21. 3 of them are common words.

What is a common example?

ACRIMONIOUSNESS is among the common words in this set.