hardheartedness

/ˌhɑrdˈhɑrtɪdnəs/
noun
  1. The quality of being unkind, unsympathetic, or lacking compassion for others.
    • The landlord's hardheartedness was shown when he evicted the family during winter.
    • She was shocked by the hardheartedness of the people who ignored the beggar.
    • Hardheartedness can make a person seem cold and distant.