- Heartless - Lacking in compassion - Destitute of pity; hard-hearted; merciless; as, a
pitilessmaster; pitiless elements. - Exciting no pity; as, a pitiless condition.
- Cold-blooded - Lacking in compassion - Lacking in compassion like the Tin Man - Unkind, cruel - Without a heart. - Destitute of courage; spiritless; despodent. - Destitute of feeling or affection; unsympathetic; cruel.