1. Without a heart. You have left me heartess; mine is in your bosom. (j. Webster)
2. Destitute of courage; spiritless; despodent. Heartless they fought, and quitted soon their ground. (Dryden) Heartless and melancholy. (W. Irwing)
3. Destitute of feeling or affection; unsympathetic; cruel. The heartless parasites. Heartlessly, Heartlessness.