15-Letter Words Matching ____A________S_

There are 15 15-letter words that match ____A________S_. 2 are common words, such as ANTIABORTIONIST and DISTASTEFULNESS. A rarer one is WARRANTABLENESS. In this set, I is the most frequent open letter (14 words). 11 words contain a doubled letter.

Full list 15

antiabortionistdistastefulnessfantasticalnesshermaphroditismimpracticalnessinflammablenessintractablenessmagnanimousnesssublapsarianismunseaworthinesscomparativenessdictatorialnessrefrangiblenessultraliberalismwarrantableness

About this list

Words
15 (2 common words)
Common example
antiabortionist
Rare example
warrantableness
Doubled letters
11
Ending in S
11
Most frequent letter
I (14)

Questions

How many 15-letter words matching ____a________s_ are there?

15. 2 of them are common words.

What is a common example?

ANTIABORTIONIST is among the common words in this set.