Ruh roh, Father Steve. I ran it through Onelook, and:
Sorry, no dictionaries indexed in the selected category contain the word Animositous.

Perhaps you meant:
antimonious (found in 9 dictionaries)
anitmonious (found in 1 dictionary)
anisosmotic (found in 1 dictionary)


You may well have seen it, but it may have been someone's coinage.