The Collaborative International Dictionary of English v.0.48:
coldhearted \cold"heart`ed\, cold-hearted \cold"-heart`ed\, a. Wanting passion or feeling or emotional warmth; indifferent. -- cold"-heart`ed*ness, n. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
cold-heartedness \cold"-heart`ed*ness\ n. an absence of concern for the welfare of others; indifference to the suffering of others. Syn: heartlessness, hardheartedness. [WordNet 1.5 +PJC]