14-Letter Words Matching _____D_____S__

There are 21 14-letter words that match _____D_____S__. 4 are common words, such as APPENDICITISES and COWARDLINESSES. A rarer one is UNKINDLINESSES. In this set, E is the most frequent open letter (20 words). 12 words contain a doubled letter.

Full list 21

appendicitisescowardlinessesfriendlinesseslopsidednessesachondroplasiasacerdotalismsepididymitiseseverydaynessesextendednessesmethodologistsoutsidernessesoveradvertisedoveradvertisesphiladelphusespteridologistssacerdotalistssecludednessessplendidnessesstrandednessestowardlinessesunkindlinesses

About this list

Words
21 (4 common words)
Common example
appendicitises
Rare example
unkindlinesses
Doubled letters
12
Ending in S
19
Most frequent letter
E (20)

Questions

How many 14-letter words matching _____d_____s__ are there?

21. 4 of them are common words.

What is a common example?

APPENDICITISES is among the common words in this set.