Mammoth Uncensored Word List:
34 words ending with ed, 17 letters long

anthropomorphised anthropomorphized compartmentalised compartmentalized counterinfluenced counterpetitioned counterquestioned disproportionated hypophysectomised hypophysectomized immunocompromised institutionalised institutionalized intercommunicated internationalised internationalized microencapsulated microminiaturized microphotographed noncommercialized nondifferentiated nonelectroporated nonfunctionalized nonindustrialized nonphosphorylated oversophisticated pancreatectomized photolithographed radioimmunoguided rechromatographed transubstantiated turbosupercharged ultraconcentrated ultraminiaturized