According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 7 words with the pattern ---EL-IS-. That is, nine letter words with 4th letter E and 5th letter L and 7th letter I and 8th letter S. In alphabetical order, they are:
angelfish
embellish
jewelfish
labellist
panellist
powellise
unselfish