15-Letter Words Matching ____________D__

There are 36 15-letter words that match ____________D__. 5 are common words, such as BROKENHEARTEDLY and DISINTERESTEDLY. A rarer one is UNANTICIPATEDLY. In this set, E is the most frequent open letter (35 words). 3 words contain a doubled letter.

Full list 36

Common words

brokenheartedlydisinterestedlypoliomyelitidesunprecedentedlyverisimilitudesacetophenetidinchlorothiazidescholecystitidesmiscomprehendedmonosaccharidesnortheastwardlynorthwestwardly
brokenheartedlydisinterestedlypoliomyelitidesunprecedentedlyverisimilitudesacetophenetidinchlorothiazidescholecystitidesmiscomprehendedmonosaccharidesnortheastwardlynorthwestwardlyosteomyelitidespolysaccharidessophisticatedlysoutheastwardlysouthwestwardlytenderheartedlyuninterruptedlychlorpropamidesfibrinopeptidesglutaraldehydesglyceraldehydesinterelectrodesmicroelectrodesmononucleotidesnoninsecticidalplatinocyanidespolyacrylamidespolynucleotidesribonucleosidesribonucleotidestrichomonacidaltrichomonacidesunadulteratedlyunanticipatedly

About this list

Words
36 (5 common words)
Common example
brokenheartedly
Rare example
unanticipatedly
Doubled letters
3
Ending in S
20
Most frequent letter
E (35)

Questions

How many 15-letter words matching ____________d__ are there?

36. 5 of them are common words.

What is a common example?

BROKENHEARTEDLY is among the common words in this set.