15-Letter Words Matching __________R__T_

There are 12 15-letter words that match __________R__T_. 3 are common words, such as ANTIPERSPIRANTS and HORTICULTURISTS. A rarer one is SUBPROLETARIATS. 2 words contain a doubled letter.

Full list 12

antiperspirantshorticulturistsnonbelligerentscephalochordatecountercurrentsantimilitaristscitriculturistsfloriculturistsinterfraternityinteruniversitysilviculturistssubproletariats

About this list

Words
12 (3 common words)
Common example
antiperspirants
Rare example
subproletariats
Doubled letters
2
Ending in S
9

Questions

How many 15-letter words matching __________r__t_ are there?

12. 3 of them are common words.

What is a common example?

ANTIPERSPIRANTS is among the common words in this set.