Pitilessness, unmercifulness.

Lack of pity, compassion, or sympathy. In early use with of.

Lack of pity; cruelty.

The quality of being inhuman or inhumane; want of human feeling and compassion; brutality, barbarous cruelty.

Lack of pity; pitilessness; harshness.

lack of compassion, pitilessness.

Want or absence of compassion or pity.

The quality or condition of being pitiless.

Ruthless quality or character; pitilessness, remorselessness.