Un-cōn'scion-a-ble, a.
a. 1. Not conscionable; not conformed to reason; unreasonable; exceeding the limits of any reasonable claim or expectation; inordinate; as, an unconscionable request or demand.
Which use of reason, most reasonless and unconscionable, is the utmost that any tyrant ever pretended over his vassals. Milton.
Sense 2. Enormous; vast; as, unconscionable size.
His giantship is gone somewhat crestfallen, Stalking with less unconscionable strides. Milton.
Sense 3. Not guided or influenced by conscience. [Obs.]
“These ungenerous as well as unconscionable practices.” South.