1. In a quiet and tranquil manner
   "the sea now shimmered placidly before our eyes" 
2. In a placid and good-natured manner
   "I put the questions, and she answered them placidly"

See also: placid

• cognizable
• cognizance
• cognizant
• cognize
• cognomen
• cognominal
• cognoscente
• cognoscible
• cognoscitive
• cognovit
• cognovit judgement
• cognovit judgment
• cogwheel
• cohabit
• cohabitant
• cohabitation
• cohabitee
• Cohan
• coheir
• cohere
• coherence
• coherency
• coherent
• coherently
• cohesion