15-Letter Words Matching ________E___O__

There are 18 15-letter words that match ________E___O__. 1 are common words, such as CIRCUMSPECTIONS and AUTOSUGGESTIONS. A rarer one is TURBOGENERATORS. 4 words contain a doubled letter.

Full list 18

circumspectionsautosuggestionshyperextensionslepidopterologyoverprotectionsproprioceptionsunconscientiousantidepressionsantisubversionschemoreceptionsgrandparenthoodinterlineationsmicroinjectionsovercorrectionsphotoreceptionsseroconversionssuperinfectionsturbogenerators

About this list

Words
18 (1 common words)
Common example
circumspections
Rare example
turbogenerators
Doubled letters
4
Ending in S
16

Questions

How many 15-letter words matching ________e___o__ are there?

18. 1 of them are common words.

What is a common example?

CIRCUMSPECTIONS is among the common words in this set.