9-Letter Words Matching ____KN___

There are 22 9-letter words that match ____KN___. 20 are common words, such as ANTIKNOCK and BLACKNESS. A rarer one is CRACKNELS. In this set, E is the most frequent open letter (19 words). 14 words contain a doubled letter.

Full list 22

antiknockblacknessblanknessbleaknessbreakneckbrisknesscrookneckdoorknobsforeknownforeknowsfranknessjackknifequicknessslacknesssleeknessslicknessslipknotsstarknessthicknessunbeknowndrawknifecracknels

About this list

Words
22 (20 common words)
Common example
antiknock
Rare example
cracknels
Doubled letters
14
Ending in S
15
Most frequent letter
E (19)

Questions

How many 9-letter words matching ____kn___ are there?

22. 20 of them are common words.

What is a common example?

ANTIKNOCK is among the common words in this set.