15-Letter Words Matching __E___R________

There are 12 15-letter words that match __E___R________. 2 are common words, such as PREFABRICATIONS and PRESSURIZATIONS. A rarer one is UNENDURABLENESS. 4 words contain a doubled letter.

Full list 12

prefabricationspressurizationsovercorrectionsoverfertilizingoverpersuasionspleasurablenessthermoreceptorsthermoregulatedthermoregulatesthermoregulatorthermoremanenceunendurableness

About this list

Words
12 (2 common words)
Common example
prefabrications
Rare example
unendurableness
Doubled letters
4
Ending in S
8

Questions

How many 15-letter words matching __e___r________ are there?

12. 2 of them are common words.

What is a common example?

PREFABRICATIONS is among the common words in this set.