13-Letter Words Matching __I______O___

There are 15 13-letter words that match __I______O___. 4 are common words, such as NEIGHBORHOODS and PHILANTHROPIC. A rarer one is WHISTLEBLOWER. In this set, T is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 15

neighborhoodsphilanthropicspinsterhoodsunintentionalanisometropiaorientationalquintillionthspirochetosisunimpassionedanisometropicepidemiologicglioblastomasovipositionalspirochetoseswhistleblower

About this list

Words
15 (4 common words)
Common example
neighborhoods
Rare example
whistleblower
Doubled letters
4
Ending in S
5
Most frequent letter
T (12)

Questions

How many 13-letter words matching __i______o___ are there?

15. 4 of them are common words.

What is a common example?

NEIGHBORHOODS is among the common words in this set.