12-Letter Words Matching _______UN___

There are 21 12-letter words that match _______UN___. 6 are common words, such as AUTOIMMUNITY and BACKGROUNDER. A rarer one is UNDERCOUNTED. In this set, O is the most frequent open letter (20 words). 10 words contain a doubled letter.

Full list 21

autoimmunitybackgroundercontrapuntalforegroundedmuskellungesuncompoundedbrassboundernoncommunistprocommunismprocommunistunpronouncedbackgroundedintercountrynoncommunityoutreboundedpreannouncedpreannouncesrediscountedsubcommunityunconfoundedundercounted

About this list

Words
21 (6 common words)
Common example
autoimmunity
Rare example
undercounted
Doubled letters
10
Ending in S
2
Most frequent letter
O (20)

Questions

How many 12-letter words matching _______un___ are there?

21. 6 of them are common words.

What is a common example?

AUTOIMMUNITY is among the common words in this set.