placid

/ˈpla-səd/

Latin placidus, from placēre to please

adjective

  1. serenely free of interruption or disturbance; also : complacent

placid skies

calm tranquil serene placid peaceful mean quiet and free from disturbance. calm often implies a contrast with a foregoing or nearby state of agitation or violence. tranquil suggests a very deep quietude or composure.

geographical name

  1. lake 5 miles (8 kilometers) long in the Adirondack Mountains of northeastern New York