12-Letter Words Matching ___K____N___

There are 14 12-letter words that match ___K____N___. 5 are common words, such as BACKGROUNDER and BACKWARDNESS. A rarer one is WORKLESSNESS. 10 words contain a doubled letter.

Full list 14

backgrounderbackwardnessmuskellungesrecklessnessticklishnessfecklessnesspickaninniesworkablenessbackgroundedcockeyednesscocksurenessparkinsonianparkinsonismworklessness

About this list

Words
14 (5 common words)
Common example
backgrounder
Rare example
worklessness
Doubled letters
10
Ending in S
10

Questions

How many 12-letter words matching ___k____n___ are there?

14. 5 of them are common words.

What is a common example?

BACKGROUNDER is among the common words in this set.