9-Letter Words Matching ____O_P__

There are 17 9-letter words that match ____O_P__. 4 are common words, such as BARHOPPED and IMPROMPTU. A rarer one is ZOOMORPHS. In this set, R is the most frequent open letter (15 words). 10 words contain a doubled letter.

Full list 17

barhoppedimprompturegroupedunstoppeduncroppedcartoppereyepopperisomorphsjoypoppedjoypopperneomorphsorthoepictrimorphsungroupedunstopperupproppedzoomorphs

About this list

Words
17 (4 common words)
Common example
barhopped
Rare example
zoomorphs
Doubled letters
10
Ending in S
4
Most frequent letter
R (15)

Questions

How many 9-letter words matching ____o_p__ are there?

17. 4 of them are common words.

What is a common example?

BARHOPPED is among the common words in this set.