Unconscionable

Part of speech: adjective (a.)

1. 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.

2. Not guided by, or conformed to, conscience. [Obs.] Ungenerous as well as unconscionable practices. South. -- Un*con"scion*a*ble*ness, n. -- Un*con"scion*a*bly, adv.