According to SOWPODS (the combination of Scrabble dictionaries
used around the world) there are 8 words with the pattern ID-A-I--.
That is, eight letter words with 1st letter I and 2nd letter D and
4th letter A and 6th letter I. In alphabetical order, they are:
idealise
idealism
idealist
ideality
idealize
ideating
ideation
ideative