13-Letter Words Matching ____E_F______

There are 13 13-letter words that match ____E_F______. 8 are common words, such as BUTTERFINGERS and FORGETFULNESS. A rarer one is PRAYERFULNESS. In this set, R is the most frequent open letter (13 words). 6 words contain a doubled letter.

Full list 13

butterfingersforgetfulnessmotherfuckersmotherfuckingnonperformingoutperformingrutherfordiumwonderfulnessgriseofulvinsmasterfulnessregretfulnessnonperformersprayerfulness

About this list

Words
13 (8 common words)
Common example
butterfingers
Rare example
prayerfulness
Doubled letters
6
Ending in S
9
Most frequent letter
R (13)

Questions

How many 13-letter words matching ____e_f______ are there?

13. 8 of them are common words.

What is a common example?

BUTTERFINGERS is among the common words in this set.