According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 10 words with the pattern E--R--I-. That is, eight letter words with 1st letter E and 4th letter R and 7th letter I. In alphabetical order, they are:
eccrisis
eccritic
ectropic
embryoid
encrinic
entropic
enuresis
enuretic
eucritic
eutropic