the GNU version of the Collaborative International Dictionary of English
adj. Wanting passion or feeling or emotional warmth; indifferent.
The Century Dictionary and Cyclopedia
Wanting sympathy or feeling; indifferent; unkind.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. lacking in sympathy or feeling
Word Usage
"Homer, the only "coldhearted" decision was when your dad sold drivers licenses to unqualified drivers who not only killed the Willis children and put the lives of all of us at risk."