|Noah Webster's Dictionary|
1. (a.) Without a heart.
2. (a.) Destitute of courage; spiritless; despondent.
3. (a.) Destitute of feeling or affection; unsympathetic; cruel.
Heartless (3 Occurrences)
Romans 1:31 without understanding, covenant breakers, without natural affection, unforgiving, unmerciful; (See RSV NIV)
Jeremiah 5:21 Hear now this, O foolish and heartless people, who have eyes and see not; who have ears, and hear not. (DBY)
Lamentations 4:3 Even the jackals draw out the breast, they nurse their young ones: The daughter of my people has become cruel, like the ostriches in the wilderness. (See NIV)