13-Letter Words Matching _____F______Y

There are 20 13-letter words that match _____F______Y. 10 are common words, such as GRANDFATHERLY and INDIFFERENTLY. A rarer one is UNCONFORMABLY. In this set, L is the most frequent open letter (17 words). 9 words contain a doubled letter.

Full list 20

grandfatherlyindifferentlyinsufficiencymagnificentlymellifluouslysacrificiallysignificantlysuperficiallysuperfluouslyuncomfortablydisaffectedlyjustificatorynonofficiallyodoriferouslypestiferouslycertificatorycrestfallenlymellifluentlysuperfluidityunconformably

About this list

Words
20 (10 common words)
Common example
grandfatherly
Rare example
unconformably
Doubled letters
9
Ending in S
0
Most frequent letter
L (17)

Questions

How many 13-letter words matching _____f______y are there?

20. 10 of them are common words.

What is a common example?

GRANDFATHERLY is among the common words in this set.