Callous Insensitive Necitelný Otrlý Bezohledný Showing Cruel Disregard

Necitelný, otrlý, bezohledný; showing or having an insensitive and cruel disregard for others; A callous person is insensitive or emotionally hardened. If you laugh at your little sister while she's trying to show you her poetry, you're being callous.

Callous comes from the Latin root callum for hard skin. If you walk barefoot a lot, your feet will become calloused.