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

• deserved
• quinque-
• quinquefoliate
• quinquefoliate leaf
• quinquennial
• quinquennium
• quinquereme
• quinsy
• quint
• quintain
• quintal
• Quintana Roo
• quinte
• quintessence
• quintessential
• quintessentially
• quintet
• quintette
• quintic
• quintile
• quintillion
• quintillionth
• quintipara
• quintuple
• quintuplet