15-Letter Words Matching _____AR________

There are 20 15-letter words that match _____AR________. 9 are common words, such as BURGLARPROOFING and DEPOLARIZATIONS. A rarer one is TEMERARIOUSNESS. In this set, I is the most frequent open letter (20 words). 6 words contain a doubled letter.

Full list 20

burglarproofingdepolarizationsdishearteninglyfoolhardinessesmilitarizationspopularizationsregularizationssecularizationsstandardizationdisheartenmentsirreparablenessmischaracterizeanticarcinogensbipolarizationsechocardiogramsendoparasitismsinseparablenessrepolarizationstachyarrhythmiatemerariousness

About this list

Words
20 (9 common words)
Common example
burglarproofing
Rare example
temerariousness
Doubled letters
6
Ending in S
15
Most frequent letter
I (20)

Questions

How many 15-letter words matching _____ar________ are there?

20. 9 of them are common words.

What is a common example?

BURGLARPROOFING is among the common words in this set.