14-Letter Words Matching _________E__R_

There are 19 14-letter words that match _________E__R_. 3 are common words, such as INTERPLANETARY and UNDERACHIEVERS. A rarer one is SUPERACHIEVERS. In this set, E is the most frequent open letter (17 words). 5 words contain a doubled letter.

Full list 19

interplanetaryunderachieversundersecretaryaccelerometersgroundskeeperspotentiometersrefractometersdemultiplexerselectioneerershemacytometershemocytometersneurosecretorynonproprietaryprotoplanetarypyrheliometersreflectometerssaccharimeterssaccharometerssuperachievers

About this list

Words
19 (3 common words)
Common example
interplanetary
Rare example
superachievers
Doubled letters
5
Ending in S
14
Most frequent letter
E (17)

Questions

How many 14-letter words matching _________e__r_ are there?

19. 3 of them are common words.

What is a common example?

INTERPLANETARY is among the common words in this set.