15-Letter Words Matching ____R_L________

There are 29 15-letter words that match ____R_L________. 9 are common words, such as CENTRALIZATIONS and DEMORALIZATIONS. A rarer one is VENTRILOQUIZING. In this set, O is the most frequent open letter (27 words). 9 words contain a doubled letter.

Full list 29

Common words

centralizationsdemoralizationsfederalizationsgeneralizationsliberalizationsnaturalizationsneutralizationsquarrelsomenesssuperfluousnesscontrollabilitycontrollershipsgastrologically
centralizationsdemoralizationsfederalizationsgeneralizationsliberalizationsnaturalizationsneutralizationsquarrelsomenesssuperfluousnesscontrollabilitycontrollershipsgastrologicallymineralogicallyupperclasswomanupperclasswomengeneralisationsinterelectrodesinterelectroniclateralizationsliteralizationsmineralizationsmongrelizationssubproletariatssuperelevationssuperfluiditiessuperplasticityventriloquiallyventriloquisticventriloquizing

About this list

Words
29 (9 common words)
Common example
centralizations
Rare example
ventriloquizing
Doubled letters
9
Ending in S
19
Most frequent letter
O (27)

Questions

How many 15-letter words matching ____r_l________ are there?

29. 9 of them are common words.

What is a common example?

CENTRALIZATIONS is among the common words in this set.