If you describe something as unconscionable, you mean that the person responsible for it ought to be ashamed of it, especially because its effects are so great or severe.
例句
It's unconscionable for the government to do anything for a man who admits to smuggling 135 tons of cocaine into the United States.一个承认将135吨可卡因走私到美国的人，政府要再为他撑腰就太逆天背理了。
英汉词典释义
adj.
昧着良心的;不合理的;过分的
an unconscionable rogue恣意妄为的流氓He kept me waiting an unconscionable time.他叫我等得太久,这是不合理的。
英英词典释义
Adjective
1. lacking a conscience;
"a conscienceless villain""brash, unprincipled, and conscienceless""an unconscionable liar"
2. greatly exceeding bounds of reason or moderation;
"exorbitant rent""extortionate prices""spends an outrageous amount on entertainment""usorious interest rate""unconscionable spending"