13-Letter Words Matching _______S__R__

There are 18 13-letter words that match _______S__R__. 8 are common words, such as NORTHEASTERLY and NORTHWESTERLY. A rarer one is TELEUTOSPORES. In this set, O is the most frequent open letter (16 words). 2 words contain a doubled letter.

Full list 18

northeasterlynorthwesterlypreregisteredreupholsteredsoutheasterlysouthwesterlythunderstormstyrannosaurusbasidiosporesbrachiosaurusichthyosauruscephalosporinethnohistoricmisregisteredoverpressuresprotohistoricpteridospermsteleutospores

About this list

Words
18 (8 common words)
Common example
northeasterly
Rare example
teleutospores
Doubled letters
2
Ending in S
8
Most frequent letter
O (16)

Questions

How many 13-letter words matching _______s__r__ are there?

18. 8 of them are common words.

What is a common example?

NORTHEASTERLY is among the common words in this set.