14-Letter Words Matching __E________R__

There are 12 14-letter words that match __E________R__. 2 are common words, such as QUESTIONNAIRES and SLEDGEHAMMERED. A rarer one is UREDINIOSPORES. In this set, E is the most frequent open letter (12 words). 3 words contain a doubled letter.

Full list 12

questionnairessledgehammeredthenceforwardsthermoelectricelectromyogramoverengineeredoverstructuredphenylthioureapneumatophoresspermatophoresstereoisomericurediniospores

About this list

Words
12 (2 common words)
Common example
questionnaires
Rare example
urediniospores
Doubled letters
3
Ending in S
5
Most frequent letter
E (12)

Questions

How many 14-letter words matching __e________r__ are there?

12. 2 of them are common words.

What is a common example?

QUESTIONNAIRES is among the common words in this set.