1. How unsympathetic of you to not help your own sister?2. He is known for his coldheartedness.3. The callous, wealthy country shows no compassion for their poor neighboring country.
 (adjective) hard-hearted; cold-hearted; callous; unsympathetic; pitiless (noun) coldheartedness請參考例句.
1. 你怎麼這麼冷血連自己妹妹都不幫忙?2. 他以他的冷血著名.
It is indecnt of him to take money away from his divorced wife.