12-Letter Words Matching ______O_N___

There are 21 12-letter words that match ______O_N___. 8 are common words, such as BACKGROUNDER and DISAPPOINTED. A rarer one is UNDERCOUNTED. In this set, E is the most frequent open letter (20 words). 11 words contain a doubled letter.

Full list 21

backgrounderdisappointedforegroundedhoneymoonershoneymooninginterconnectuncommonnessuncompoundedbrassboundercarillonneursurrejoinderunpronouncedbackgroundedcarillonningintercountryoutreboundedpreannouncedpreannouncesrediscountedunconfoundedundercounted

About this list

Words
21 (8 common words)
Common example
backgrounder
Rare example
undercounted
Doubled letters
11
Ending in S
3
Most frequent letter
E (20)

Questions

How many 12-letter words matching ______o_n___ are there?

21. 8 of them are common words.

What is a common example?

BACKGROUNDER is among the common words in this set.