13-Letter Words Matching _I_______O___

There are 19 13-letter words that match _I_______O___. 4 are common words, such as BIDIRECTIONAL and DISILLUSIONED. A rarer one is WITENAGEMOTES. In this set, N is the most frequent open letter (15 words). 3 words contain a doubled letter.

Full list 19

bidirectionaldisillusionedmisdemeanoursvivisectionaldispositionalmicroeconomicmispositionedsiphonophoresbiconditionalbildungsromandisaccustomeddisfunctionalfianchettoingfibrosarcomasmicrobiologicmicrocosmosesmisfunctionedpicturephoneswitenagemotes

About this list

Words
19 (4 common words)
Common example
bidirectional
Rare example
witenagemotes
Doubled letters
3
Ending in S
6
Most frequent letter
N (15)

Questions

How many 13-letter words matching _i_______o___ are there?

19. 4 of them are common words.

What is a common example?

BIDIRECTIONAL is among the common words in this set.