13-Letter Words Matching ___L_F_______

There are 18 13-letter words that match ___L_F_______. 9 are common words, such as AMPLIFICATION and FAULTFINDINGS. A rarer one is PROLIFICITIES. In this set, I is the most frequent open letter (18 words). 5 words contain a doubled letter.

Full list 18

amplificationfaultfindingsjollificationmellifluouslymollificationnullificationproliferatingproliferationqualificationproliferativeprolificaciescaulifloweretcoalificationmellifluentlymyelofibrosesmyelofibrosismyelofibroticprolificities

About this list

Words
18 (9 common words)
Common example
amplification
Rare example
prolificities
Doubled letters
5
Ending in S
5
Most frequent letter
I (18)

Questions

How many 13-letter words matching ___l_f_______ are there?

18. 9 of them are common words.

What is a common example?

AMPLIFICATION is among the common words in this set.