15-Letter Words Matching F_R____________

There are 13 15-letter words that match F_R____________. 4 are common words, such as FEROCIOUSNESSES and FORESIGHTEDNESS. A rarer one is FORTUNATENESSES. 10 words contain a doubled letter.

Full list 13

ferociousnessesforesightednessforgetfulnessesfortunetellingsferromagnetismsforeordinationsformidabilitiesforthcomingnessferrimagnetismsferromanganesesforgivingnessesformularizationfortunatenesses

About this list

Words
13 (4 common words)
Common example
ferociousnesses
Rare example
fortunatenesses
Doubled letters
10
Ending in S
12

Questions

How many 15-letter words matching f_r____________ are there?

13. 4 of them are common words.

What is a common example?

FEROCIOUSNESSES is among the common words in this set.