According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 10 words with the pattern ----IMA--. That is, nine letter words with 5th letter I and 6th letter M and 7th letter A. In alphabetical order, they are:
acclimate
archimage
collimate
exanimate
inanimate
lacrimals
proximate
reanimate
reprimand
sublimate