15-Letter Words Matching _________E_I___

There are 29 15-letter words that match _________E_I___. 5 are common words, such as GASTROENTERITIS and GEOENGINEERINGS. A rarer one is ULTRACONVENIENT. 9 words contain a doubled letter.

Full list 29

Common words

gastroenteritisgeoengineeringsintercollegiatemountaineeringsnitroglycerinesacetophenetidinbioengineeringschloramphenicolelectrochemicalferromagnetismsphysicochemicalantitheoretical
gastroenteritisgeoengineeringsintercollegiatemountaineeringsnitroglycerinesacetophenetidinbioengineeringschloramphenicolelectrochemicalferromagnetismsphysicochemicalantitheoreticalbackscatteringsbenzodiazepinescounterguerillaferrimagnetismshyperexcretionshypersecretionsmechanochemicalneurosecretionsnoncomputerizednonengineeringsoverhomogenizedoverhomogenizespaleomagnetismspaleomagnetistsrumormongeringssuperconvenientultraconvenient

About this list

Words
29 (5 common words)
Common example
gastroenteritis
Rare example
ultraconvenient
Doubled letters
9
Ending in S
17

Questions

How many 15-letter words matching _________e_i___ are there?

29. 5 of them are common words.

What is a common example?

GASTROENTERITIS is among the common words in this set.