knowable(capable of being known, understood or comprehended) adjective [UK: ˈnəʊəbl ] [US: ˈnoʊəbl ]
irriconoscibileadjective
unrecognizable(that cannot be recognized) adjective [UK: ʌn.ˈrek.əɡ.naɪ.zəb.l̩] [US: ʌn.ˌrek.əg.ˈnaɪ.zəb.l̩]He was unrecognizable. = Era irriconoscibile.