12-Letter Words Matching __IO________

There are 13 12-letter words that match __IO________. 4 are common words, such as IDIOSYNCRASY and ODIOUSNESSES. A rarer one is UNIONISATION. 2 words contain a doubled letter.

Full list 13

idiosyncrasyodiousnessesprioritizingunionizationaxiomatizingthiosinaminedeionizationglioblastomaotiosenessesthiocyanatesthioridazinethiosulfatesunionisation

About this list

Words
13 (4 common words)
Common example
idiosyncrasy
Rare example
unionisation
Doubled letters
2
Ending in S
4

Questions

How many 12-letter words matching __io________ are there?

13. 4 of them are common words.

What is a common example?

IDIOSYNCRASY is among the common words in this set.