15-Letter Words Matching ____AS_________

There are 17 15-letter words that match ____AS_________. 5 are common words, such as COMPASSIONATELY and DISPASSIONATELY. A rarer one is ULTRASTRUCTURES. In this set, T is the most frequent open letter (16 words). 9 words contain a doubled letter.

Full list 17

compassionatelydispassionatelydistastefulnessinfrastructurespervasivenessesfantasticalnessimmeasurabilityinfrastructuralultrasonographycompassionatingdefeasibilitiesfantasticationsinfeasibilitiesoverassessmentsthalassocraciesultrastructuralultrastructures

About this list

Words
17 (5 common words)
Common example
compassionately
Rare example
ultrastructures
Doubled letters
9
Ending in S
10
Most frequent letter
T (16)

Questions

How many 15-letter words matching ____as_________ are there?

17. 5 of them are common words.

What is a common example?

COMPASSIONATELY is among the common words in this set.