defendable(capable of being defended) adjectiveHis logic is in no way defendable. = La sua logica non è in alcun modo difendibile.
defensible(capable of being defended) adjective [UK: dɪ.ˈfen.səb.l̩] [US: də.ˈfen.səb.l̩]His logic is in no way defensible. = La sua logica non è in alcun modo difendibile.
indifendibileadjective
untenable(Not able to be held, as of an opinion or position) adjective [UK: ʌn.ˈte.nəb.l̩] [US: ʌn.ˈte.nəb.l̩]