13-Letter Words Matching _I_F_________

There are 17 13-letter words that match _I_F_________. 6 are common words, such as DIFFERENTIALS and DIFFERENTIATE. A rarer one is MISFUNCTIONED. 9 words contain a doubled letter.

Full list 17

differentialsdifferentiatediffusenessesdisfigurementdisfranchiseddisfranchisesdifferentnessdisfigurationairfreightingdieffenbachiadiffusionismsdiffusionistsdiffusivenessdiffusivitiesdisfunctionaldisfurnishingmisfunctioned

About this list

Words
17 (6 common words)
Common example
differentials
Rare example
misfunctioned
Doubled letters
9
Ending in S
8

Questions

How many 13-letter words matching _i_f_________ are there?

17. 6 of them are common words.

What is a common example?

DIFFERENTIALS is among the common words in this set.