11-Letter Words Matching ________E_R

There are 20 11-letter words that match ________E_R. 12 are common words, such as ANTINUCLEAR and ARBITRAGEUR. A rarer one is HOMONUCLEAR. 7 words contain a doubled letter.

Full list 20

antinucleararbitrageurchanticleerconnoisseurelectioneerinterlinearleisurewearlitterateurmonseigneurmountaineerpamphleteerrectilinearbioengineercurvilinearhydrometeorlithometeormononuclearpolynuclearprovocateurhomonuclear

About this list

Words
20 (12 common words)
Common example
antinuclear
Rare example
homonuclear
Doubled letters
7
Ending in S
0

Questions

How many 11-letter words matching ________e_r are there?

20. 12 of them are common words.

What is a common example?

ANTINUCLEAR is among the common words in this set.