Noah Webster
Unconscionable
UNCON'SCIONABLE, adjective
1. Unreasonable; exceeding the limits of any reasonable claim or expectation; as an unconscionable request or demand.
2. Forming unreasonable expectations. You cannot be so unconscionable as to expect this sacrifice on my part.
3. Enormous; vast; as unconscionable size or strides. [Not elegant.]
4. Not guided or influenced by conscience.