15-Letter Words Containing RF

There are 23 15-letter words that contain RF. 7 are common words, such as COLORFASTNESSES and IMPERFECTNESSES. A rarer one is SUPERFLUIDITIES. In this set, E is the most frequent open letter (23 words). 8 words contain a doubled letter.

Full list 23

colorfastnessesimperfectnessesnoninterferencenonperformancespaterfamiliasessuperfluousnesswonderfulnessesinterferometersinterferometricoverfamiliarityperfectionisticperfunctorinesssuperficialnesshyperfastidioushyperfunctionalinterfraternitymasterfulnessesmaterfamiliasesoverfertilizingprayerfulnessespreperformancesquarterfinalistsuperfluidities

About this list

Words
23 (7 common words)
Common example
colorfastnesses
Rare example
superfluidities
Doubled letters
8
Ending in S
15
Most frequent letter
E (23)

Questions

How many 15-letter words containing rf are there?

23. 7 of them are common words.

What is a common example?

COLORFASTNESSES is among the common words in this set.