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.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI