1. Excessively
   "a cruelly bitter winter" 
2. With cruelty
   "he treated his students cruelly"
   - sadistically

See also: cruel

• Koestler
• kofta
• Kogia
• Kogia breviceps
• Kogia simus
• kohanga reo
• kohl
• kohleria
• kohlrabi
• koi
• koi carp
• koine
• koinonia
• kok-saghyz
• pyknosis
• pyknotic
• Pyle
• Pylodictus
• Pylodictus olivaris
• pylon
• pyloric
• pyloric sphincter
• pyloric stenosis
• pyloric valve
• pyloric vein