14-Letter Words Matching ____S___R_____

There are 18 14-letter words that match ____S___R_____. 7 are common words, such as AMBASSADRESSES and IDIOSYNCRASIES. A rarer one is TREASURERSHIPS. In this set, A is the most frequent open letter (17 words). 3 words contain a doubled letter.

Full list 18

ambassadressesidiosyncrasiespraiseworthiertransmigratingtransmigrationtransmogrifiedtransmogrifiescounselorshipspraiseworthilytransitorinesstransmigratoryantiseparatistbreaststrokersjohnsongrassesoversaturatingoversaturationtransmigratorstreasurerships

About this list

Words
18 (7 common words)
Common example
ambassadresses
Rare example
treasurerships
Doubled letters
3
Ending in S
9
Most frequent letter
A (17)

Questions

How many 14-letter words matching ____s___r_____ are there?

18. 7 of them are common words.

What is a common example?

AMBASSADRESSES is among the common words in this set.