15-Letter Words Matching ________IO_____

There are 53 15-letter words that match ________IO_____. 17 are common words, such as BIDIRECTIONALLY and DISILLUSIONMENT. A rarer one is UNTRADITIONALLY. In this set, N is the most frequent open letter (50 words). 26 words contain a doubled letter.

Full list 53

Common words

bidirectionallydisillusionmentinstitutionallyinternationallyobstructionismsobstructionistsprepositionallyprohibitionistsreapportionmentsegregationistsunconditionallyunexceptionable
bidirectionallydisillusionmentinstitutionallyinternationallyobstructionismsobstructionistsprepositionallyprohibitionistsreapportionmentsegregationistsunconditionallyunexceptionableunexceptionablyunexceptionallyunintentionallyunobjectionablevivisectionistscomputationallyabstractionismsabstractionistsassociationismscoeducationallycompunctionlesscongressionallyconjugationallyconjunctionallydysfunctionallygravitationallyinspirationallyobservationallyantifashionableassociationistscompositionallycooperationistscounterviolencedestructionistsechocardiogramsendometriosisesinformationallyintegrationistslymphangiogramsmetafictionistsmicroradiographorientationallyoveropinionatedphenylthioureasphotoperiodismsprerevisionistsrepudiationistsreservationistsrestrictionismsrestrictionistsuntraditionally

About this list

Words
53 (17 common words)
Common example
bidirectionally
Rare example
untraditionally
Doubled letters
26
Ending in S
24
Most frequent letter
N (50)

Questions

How many 15-letter words matching ________io_____ are there?

53. 17 of them are common words.

What is a common example?

BIDIRECTIONALLY is among the common words in this set.