The food is Italian—risotto, tortellini, salad—in a nod to a mystifying (to me) sequence in the film.
Christine Pelisek investigates a mystifying and macabre case.
The busy hostile world outside is mystifying and a little unreal.
1814, from French mystifier (1772), a verb formed irregularly from mystique "a mystic" (see mystic (adj.)) + -fier (see -fy). Related: Mystified; mystifying.