4-Letter Words Matching _U_F

There are 16 4-letter words that match _U_F. 12 are common words, such as BUFF and CUFF. A rarer one is CURF. In this set, F is the most frequent open letter (10 words). 10 words contain a doubled letter.

Full list 16

buffcuffduffguffgulfhuffluffmuffpuffruffsurfturfbumftuffcuifcurf

About this list

Words
16 (12 common words)
Common example
buff
Rare example
curf
Doubled letters
10
Ending in S
0
Most frequent letter
F (10)

Questions

How many 4-letter words matching _u_f are there?

16. 12 of them are common words.

What is a common example?

BUFF is among the common words in this set.