unconscionable
     adj 1: lacking a conscience; "a conscienceless villain"; "brash,
            unprincipled, and conscienceless"; "an unconscionable
            liar" [syn: {conscienceless}]
     2: greatly exceeding bounds of reason or moderation;
        "exorbitant rent"; "extortionate prices"; "spends an
        outrageous amount on entertainment"; "usorious interest
        rate"; "unconscionable spending" [syn: {exorbitant}, {extortionate},
         {outrageous}, {steep}, {usurious}]
Source: WordNet® 2.0