callous
KAL-usadjMeaning unfeeling toward other people’s pain or trouble
Memory hook a CALLUS on the heart. A callus is hard skin that feels nothing. Rex walks past the crying girl without a glance, as if his heart had a callus: he is callous.
Laughing at the boy who dropped his lunch tray was a callous thing to do.
In context The landlord’s answer to the flooded families was callous: he said their ruined furniture was not his problem and went back to his lunch.
Similar heartless, unfeeling, insensitive, cold
Opposite compassionate, sympathetic, caring
From Latin callosus, “hard-skinned,” from callum, hard skin.