Etymology of the English word pettipants
the English word pettipants
derived from the English word petticoat
derived from the English word pants
derived from the Old French word pantaisier
derived from the Latin root *pantasiare
derived from the Greek word phantasioun
derived from the Greek word phantasia, φαντασία ((properly abstract) a (vain) show ('fantasy'))
derived from the Greek word phantazein, φαντάζω (to make apparent; to appear (neuter participle as noun, a spectacle))