Mammoth Uncensored Word List:
36 words ending with sy, 8 letters long

actressy apostasy athanasy circussy citrussy courtesy cramoisy docimasy dyspepsy eclampsy epilepsy epistasy euphrasy gealousy geognosy hydropsy isostasy jealousy kielbasy kolkhosy necropsy nonfussy nonmessy overbusy overeasy phantasy photopsy pleurisy primrosy prophesy rebiopsy trophesy uncheesy unclassy undrossy upadaisy