unwishable

1653, John Goodwin, An Exposition of The Ninth Chapter of the Epistle to the Romans, [1652, A Paraphrase], 1835, Baynes and Son, page 69, This interpretation, though it doth not suppose an eternal separation from Christ to be the matter of the Apostle's actual wish, at one time or other, or upon one consideration or other, wherein it differs from the former; yet it rendereth it as a thing wishable, or which the Apostle could and would wish, in case the two impediments specified, which render it de facto unwishable, were or could be removed out of the way.

Instead it begins in mid-wishing with a negative fulfilment, and it tails off without an end into an indefinite future of wishing for what the unwished-for knowledge has rendered unobtainable, unwishable.

2007, Rachel Bowlby, Freudian Mythologies: Greek Tragedy and Modern Identities, Oxford University Press, page 148