n. The state or character of being unfeeling; insensibility; hardness; cruelty.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. devoid of passion or feeling; hardheartedness
Word Usage
"Amid complaints about my general unfeelingness and lack of consideration for a gravely injured man, he got dressed and sat long enough for me to bind up the weak ankle before his natural exuberance asserted itself."