/ˈkæl.əs.nəs/
noun
behaviour that is unkind, cruel, and without sympathy or feeling for other people:
She felt the rules showed a callousness and indifference to the suffering of others.
I am appalled by the callousness of some business people.
adjective
not caring about other people’s feelings or suffering 冷酷无情的；无同情心的；冷漠的 SYN cruel, unfeeling
a callous killer/attitude/act
冷血杀手；漠不关心的态度；冷酷的行为
a callous disregard for the feelings of others
对他人感情的漠视
callous