12-Letter Words Matching ________S__R

There are 18 12-letter words that match ________S__R. 6 are common words, such as ANTIMACASSAR and BRONCOBUSTER. A rarer one is SUPERCLUSTER. In this set, E is the most frequent open letter (17 words). 8 words contain a doubled letter.

Full list 18

antimacassarbroncobusterextinguisherschoolmastersportscastertransgressoraccomplisherharbormasterharquebusiermiddlebusterrelinquisheragroforesterdispossessorimpoverisherinterclusterpreprocessorsnollygostersupercluster

About this list

Words
18 (6 common words)
Common example
antimacassar
Rare example
supercluster
Doubled letters
8
Ending in S
0
Most frequent letter
E (17)

Questions

How many 12-letter words matching ________s__r are there?

18. 6 of them are common words.

What is a common example?

ANTIMACASSAR is among the common words in this set.