鬼胎

鬼胎	guǐ tāi	sinister design / ulterior motive
鬼	guǐ	disembodied spirit; ghost; devil / (suffix) person with a certain vice or addiction etc / sly; crafty; resourceful (variant of 诡) / one of the 28 constellations of ancient Chinese astronomy
胎	tāi	fetus / classifier for litters (of puppies etc) / padding (in clothing or bedding) / womb carrying a fetus / (fig.) origin / source / (loanword) tire