9-Letter Words Matching _____R__F

There are 21 9-letter words that match _____R__F. 7 are common words, such as BOMBPROOF and FIREPROOF. A rarer one is PICKPROOF. In this set, O is the most frequent open letter (21 words). 20 words contain a doubled letter.

Full list 21

bombprooffireprooffoolproofheatproofrainproofrustproofwindproofcrossruffdampproofdustproofholeproofmothproofovenproofskidproofwearproofgermproofleakproofnontariffoverbriefoverproofpickproof

About this list

Words
21 (7 common words)
Common example
bombproof
Rare example
pickproof
Doubled letters
20
Ending in S
0
Most frequent letter
O (21)

Questions

How many 9-letter words matching _____r__f are there?

21. 7 of them are common words.

What is a common example?

BOMBPROOF is among the common words in this set.