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

• okey-doke
• okey-dokey
• Okinawa
• Okinawa campaign
• Oklahoma
• Oklahoma City
• Oklahoman
• okra
• okra plant
• okta
• Oktoberfest
• ola
• Olaf II
• Olav II
• old
• smoulderingly
• SMS
• SMSgt
• SMTP
• smudge
• smudgy
• smug
• smuggle
• smuggled
• smuggler