Pitiless \Pit"i*less\, a.

1. Destitute of pity; hard-hearted; merciless; as, a pitilessmaster; pitiless elements.

2. Exciting no pity; as, a pitiless condition. -- Pit"i*less*ly, adv. -- Pit"i*less*ness, n.

Source: Webster's Revised Unabridged Dictionary (1913)