14-Letter Words Matching ______R___O___

There are 20 14-letter words that match ______R___O___. 6 are common words, such as BURGLARPROOFED and CLAUSTROPHOBIA. A rarer one is THUNDERSTROKES. 5 words contain a doubled letter.

Full list 20

burglarproofedclaustrophobiaclaustrophobicnonoperationalsubmicroscopicweatherproofedamphiarthrosiscounterstrokesillustrationalanticarcinogenclaustrophobesconspirationalcountereffortscounterreformsnonchurchgoersnonhygroscopicpreoperationalsporotrichosessporotrichosisthunderstrokes

About this list

Words
20 (6 common words)
Common example
burglarproofed
Rare example
thunderstrokes
Doubled letters
5
Ending in S
9

Questions

How many 14-letter words matching ______r___o___ are there?

20. 6 of them are common words.

What is a common example?

BURGLARPROOFED is among the common words in this set.