humane
adjective uk/hjuːˈmeɪn/ us/hjuːˈmeɪn/
（尤指对待受苦者）善良的，仁慈的，人道的
showing kindness, care, and sympathy towards others, especially those who are suffering
The humane way of dealing with a suffering animal (= the way that causes the least pain) is to kill it quickly. 对待为病痛所折磨的动物，比较人道的办法就是尽快结束它的生命。
Opposite: inhumane