15-Letter Words Matching _____F_________

There are 58 15-letter words that match _____F_________. 19 are common words, such as COLORFASTNESSES and DISAFFILIATIONS. A rarer one is UNPROFESSIONALS. In this set, I is the most frequent open letter (52 words). 24 words contain a doubled letter.

Full list 58

Common words

colorfastnessesdisaffiliationsdisenfranchiseddisenfranchisesdisinformationsimperfectnessesinsufficienciesmellifluousnessmisinformationsnoninflammatorynoninflationarypaterfamiliases
colorfastnessesdisaffiliationsdisenfranchiseddisenfranchisesdisinformationsimperfectnessesinsufficienciesmellifluousnessmisinformationsnoninflammatorynoninflationarypaterfamiliasesphotofinishingsreconfirmationssteadfastnessessuperfluousnesstransfigurationtransformationsunselfishnessesreconfigurationcaprifoliaceousinterferometersinterferometricmultifunctionalodoriferousnesspassifloraceouspestiferousnesssuperficialnesstransferabilityunprofitabilityunselfconsciousariboflavinosesariboflavinosiscrestfallennessdecaffeinationsdedifferentiatedesulfurizationdisinfestationsdisinflationaryfloriferousnesshyperfastidioushyperfunctionalindifferentismsindifferentistsinterfraternitylightfastnessesmaterfamiliasesneurofibrillarynonenforcementsnoninflectionalnoninformationsphytoflagellatesubinfeudationssuperfluiditiestightfistednessultrafastidiousultrafiltrationunprofessionals

About this list

Words
58 (19 common words)
Common example
colorfastnesses
Rare example
unprofessionals
Doubled letters
24
Ending in S
40
Most frequent letter
I (52)

Questions

How many 15-letter words matching _____f_________ are there?

58. 19 of them are common words.

What is a common example?

COLORFASTNESSES is among the common words in this set.