15-Letter Words Matching _A__T__________

There are 14 15-letter words that match _A__T__________. 10 are common words, such as CAPITALIZATIONS and DAUNTLESSNESSES. A rarer one is PALATABLENESSES. In this set, N is the most frequent open letter (14 words). 7 words contain a doubled letter.

Full list 14

capitalizationsdauntlessnessesfacetiousnessesfaultlessnesseslatitudinariansmaintainabilitypalatalizationssanctificationssanctimoniouslyvaletudinariansfanaticalnesseshabitablenessespainterlinessespalatablenesses

About this list

Words
14 (10 common words)
Common example
capitalizations
Rare example
palatablenesses
Doubled letters
7
Ending in S
12
Most frequent letter
N (14)

Questions

How many 15-letter words matching _a__t__________ are there?

14. 10 of them are common words.

What is a common example?

CAPITALIZATIONS is among the common words in this set.