13-Letter Words Containing IFU

There are 12 13-letter words that contain IFU. 3 are common words, such as BOUNTIFULNESS and CENTRIFUGALLY. A rarer one is UNDUTIFULNESS. 8 words contain a doubled letter.

Full list 12

bountifulnesscentrifugallydutifulnessesmultifunctionplentifulnessbeautifulnesspitifulnessesrecentrifugedrecentrifugestrifurcationsunbeautifullyundutifulness

About this list

Words
12 (3 common words)
Common example
bountifulness
Rare example
undutifulness
Doubled letters
8
Ending in S
8

Questions

How many 13-letter words containing ifu are there?

12. 3 of them are common words.

What is a common example?

BOUNTIFULNESS is among the common words in this set.