The Collaborative International Dictionary
Unconscionable \Un*con"scion*a*ble\, a.
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Not conscionable; not conforming to reason; unreasonable; exceeding the limits of any reasonable claim or expectation; inordinate; as, an unconscionable person or demand; unconscionable size.
Which use of reason, most reasonless and unconscionable, is the utmost that any tyrant ever pretended.
--Milton.His giantship is gone somewhat crestfallen, Stalking with less unconscionable strides.
--Milton. -
Not guided by, or conformed to, conscience. [Obs.]
Ungenerous as well as unconscionable practices.
--South. [1913 Webster] -- Un*con"scion*a*ble*ness, n. -- Un*con"scion*a*bly, adv.
Wiktionary
adv. In an unconscionable manner.
Usage examples of "unconscionably".
George realised that he had simply been lying on the soft brown floor, his mind a blank, for an unconscionably long time, his head pillowed in her lap.
Fed by that elixir of blood the Jew had given her, her own, and his, the being that lay before them both began, unconscionably, to awaken.
Because the object was not simple addition, whereby another Adam would merely have meant two Adams, both mopish, dumpish, unconscionably lazy.
Nor should he appear irritated that it had taken Federation such an unconscionably long time to dispatch an Investigator.