According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 9 words with the pattern -N---I-I-. That is, nine letter words with 2nd letter N and 6th letter I and 8th letter I. In alphabetical order, they are:
anaclisis
anaclitic
analcimic
andesitic
anticivic
endomixis
enteritis
onychitis
unpolitic