13-Letter Words Matching F_____O______

There are 19 13-letter words that match F_____O______. 9 are common words, such as FACETIOUSNESS and FEROCIOUSNESS. A rarer one is FRACTIONATORS. In this set, N is the most frequent open letter (19 words). 7 words contain a doubled letter.

Full list 19

facetiousnessferociousnessforegroundingforeknowledgeforeshortenedfractiousnessfrivolousnessfunctionalityfunctionariesferroconcretefibrinolysinsfractionatingfractionationfugaciousnessfunctionalismfunctionalistfeloniousnessfractionalizefractionators

About this list

Words
19 (9 common words)
Common example
facetiousness
Rare example
fractionators
Doubled letters
7
Ending in S
9
Most frequent letter
N (19)

Questions

How many 13-letter words matching f_____o______ are there?

19. 9 of them are common words.

What is a common example?

FACETIOUSNESS is among the common words in this set.