сиреневыйsyringeus [a, um];
бережныйcautus [a, um],
стрекотатьstridere [eo/o, -/di]
decrepitus [a, um] ; aetate confectus [a, um] ; vietus [a, um] (senex); vetus [e]ris; imbecillis [e]; cariosus [a, um] (carisa senectus); + дряхлый старик silicernium;