Mammoth Uncensored Word List:
34 words ending with py, 10 letters long

aeolotropy amnioscopy anemoscopy angioscopy anisotropy apitherapy astroscopy biotherapy colposcopy counterspy culdoscopy cystoscopy foetoscopy gonioscopy heliotropy heterotopy hieroscopy hygroscopy microscopy minifloppy necroscopy opotherapy orthotropy overcanopy phototropy pleiotropy radioscopy rhinoscopy slipsloppy stereotypy thixotropy urinoscopy zoanthropy zootherapy