12-Letter Words Containing REF

There are 54 12-letter words that contain REF. 24 are common words, such as AFTEREFFECTS and FIREFIGHTERS. A rarer one is ULTRAREFINED. In this set, I is the most frequent open letter (45 words). 9 words contain a doubled letter.

Full list 54

Common words

aftereffectsfirefightersfirefightingprefabricatepreferentialputrefactionputrefactiverarefactionsrefashioningreflectivelyreformationsreformatting
aftereffectsfirefightersfirefightingprefabricatepreferentialputrefactionputrefactiverarefactionsrefashioningreflectivelyreformationsreformattingreformulatedreformulatesrefortifyingrefractoriesrefreshinglyrefreshmentsrefrigerantsrefrigeratedrefrigeratesrefrigeratorrefurbishingrefurnishingbirefringentirreformableirrefragableirrefragablyprefectorialreflationaryreflectancesreflectionalreflectivityrefractionalrefractivelyrefractivityrefractorilyunreflectingunreflectivemisreferencemisreferringprefinancingprefocussingpreformationpreformattedpreformulatereflectorizerefoundationrefrainmentsrefresheningrefurbisherssurefootedlyultracarefulultrarefined

About this list

Words
54 (24 common words)
Common example
aftereffects
Rare example
ultrarefined
Doubled letters
9
Ending in S
12
Most frequent letter
I (45)

Questions

How many 12-letter words containing ref are there?

54. 24 of them are common words.

What is a common example?

AFTEREFFECTS is among the common words in this set.