9-Letter Words Matching U___F____

There are 15 9-letter words that match U___F____. 4 are common words, such as UNDEFINED and UNREFINED. A rarer one is UPWAFTING. In this set, N is the most frequent open letter (13 words). 6 words contain a doubled letter.

Full list 15

undefinedunrefinedunruffledupliftinguglifyingundefiledunoffereduglifiersunciformsuncoffinsuncuffingunmuffledunmufflesupliftersupwafting

About this list

Words
15 (4 common words)
Common example
undefined
Rare example
upwafting
Doubled letters
6
Ending in S
5
Most frequent letter
N (13)

Questions

How many 9-letter words matching u___f____ are there?

15. 4 of them are common words.

What is a common example?

UNDEFINED is among the common words in this set.