Gibson's character is depicted brooding his way through some kind of existential funk that seriously strains the emotional health of his family. Things only worsen when he happens upon a ratty plush toy in the garbage and gives it a voice. Soon his idiosyncracy becomes his only way of expressing himself to loved ones. Given how much we've all heard the Oscar-winning 'Braveheart' star expressing himself regarding family matters, it's a bizarre string of scene snippets, to say the least. [source]
The correct spelling is idiosyncrasy.
I wonder if misspelling words is one the author's idiosyncrasies.