11-Letter Words Matching U____F_____

There are 14 11-letter words that match U____F_____. 4 are common words, such as UNCONFIRMED and UNFULFILLED. A rarer one is UNCONFUSING. In this set, E is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 14

unconfirmedunfulfilledunperformedunselfishlyunderfundedultrafilterumbriferousunperfectedunprofesseduriniferousultrafichesuncoffiningunconfessedunconfusing

About this list

Words
14 (4 common words)
Common example
unconfirmed
Rare example
unconfusing
Doubled letters
4
Ending in S
3
Most frequent letter
E (12)

Questions

How many 11-letter words matching u____f_____ are there?

14. 4 of them are common words.

What is a common example?

UNCONFIRMED is among the common words in this set.