14-Letter Words Matching _______R_O____

There are 12 14-letter words that match _______R_O____. 3 are common words, such as BULLETPROOFING and MULTIFARIOUSLY. A rarer one is WHEELBARROWING. 2 words contain a doubled letter.

Full list 12

bulletproofingmultifariouslyvaingloriouslynonintercourseunderperformedextracorporealfibrosarcomataintercorporateosteosarcomataphotoperiodismpolyembryonieswheelbarrowing

About this list

Words
12 (3 common words)
Common example
bulletproofing
Rare example
wheelbarrowing
Doubled letters
2
Ending in S
1

Questions

How many 14-letter words matching _______r_o____ are there?

12. 3 of them are common words.

What is a common example?

BULLETPROOFING is among the common words in this set.