14-Letter Words Matching __O________N__

There are 12 14-letter words that match __O________N__. 3 are common words, such as AFOREMENTIONED and PRONOUNCEMENTS. A rarer one is TROUBLEMAKINGS. 3 words contain a doubled letter.

Full list 12

aforementionedpronouncementswoolgatheringsabortifacientsprogestationalpronunciamentobromocriptinesisoalloxazinessportscastingssportswritingstoothbrushingstroublemakings

About this list

Words
12 (3 common words)
Common example
aforementioned
Rare example
troublemakings
Doubled letters
3
Ending in S
9

Questions

How many 14-letter words matching __o________n__ are there?

12. 3 of them are common words.

What is a common example?

AFOREMENTIONED is among the common words in this set.