15-Letter Words Matching ________S__A___

There are 12 15-letter words that match ________S__A___. 2 are common words, such as INFINITESIMALLY and LACKADAISICALLY. A rarer one is SUPERPHOSPHATES. 8 words contain a doubled letter.

Full list 12

infinitesimallylackadaisicallyincommensurableinterpersonallyastrophysicallyhomotransplantsimmunoassayableincommensurablymicrophysicallynonencapsulatedorthophosphatessuperphosphates

About this list

Words
12 (2 common words)
Common example
infinitesimally
Rare example
superphosphates
Doubled letters
8
Ending in S
3

Questions

How many 15-letter words matching ________s__a___ are there?

12. 2 of them are common words.

What is a common example?

INFINITESIMALLY is among the common words in this set.