1. Without mercy or pity
   - pitiless, remorseless, ruthless

See also: merciless, unmerciful

• penstock
• pent
• pent-up
• penta-
• pentacle
• pentad
• pentaerythritol
• pentagon
• Pentagon Gang
• pentagonal
• pentagram
• pentahedral
• pentahedron
• mud plantain
• mud puddle
• mud puppy
• mud stain
• mud turtle
• mud-beplastered
• mud-brick
• mud-slinging
• mudcat
• mudder
• muddied
• muddily