15-Letter Words Matching _______I__O____

There are 21 15-letter words that match _______I__O____. 5 are common words, such as DISCONTINUOUSLY and INCONSPICUOUSLY. A rarer one is SUBREPTITIOUSLY. In this set, I is the most frequent open letter (21 words). 3 words contain a doubled letter.

Full list 21

discontinuouslyinconspicuouslypreconditioningsuperstitiouslysurreptitiouslyarchiepiscopacyarchiepiscopatecontradictorilyoverambitiouslypsychobiologistvespertilioninechronobiologieschronobiologistcontradictoriesecophysiologiesepizootiologiesmontmorillonitepsychobiologiespsychohistorianpsychohistoriessubreptitiously

About this list

Words
21 (5 common words)
Common example
discontinuously
Rare example
subreptitiously
Doubled letters
3
Ending in S
6
Most frequent letter
I (21)

Questions

How many 15-letter words matching _______i__o____ are there?

21. 5 of them are common words.

What is a common example?

DISCONTINUOUSLY is among the common words in this set.