9-Letter Words Matching __UP_____

There are 23 9-letter words that match __UP_____. 10 are common words, such as COUPLINGS and ERUPTIONS. A rarer one is SCUPPAUGS. In this set, I is the most frequent open letter (18 words). 4 words contain a doubled letter.

Full list 23

couplingseruptionsibuprofenpauperismpauperizescupperedstupefiedstupefiesstupideststupiditydrupeletssoupspoonstupefierstuporousclupeoidscouponingdauphinesdoupioniseruptibleeruptivespauperingpaupiettescuppaugs

About this list

Words
23 (10 common words)
Common example
couplings
Rare example
scuppaugs
Doubled letters
4
Ending in S
10
Most frequent letter
I (18)

Questions

How many 9-letter words matching __up_____ are there?

23. 10 of them are common words.

What is a common example?

COUPLINGS is among the common words in this set.