ˈplasə̇d, -laas- adjective
Etymology: Latin placidus, from placēre to please — more at please
1.
a. : marked by serenity : smooth , tranquil
ribbon of sand … between the angry sea and the placid bay — D.J.Lynde
the placid atmosphere of easy living — Louis Fischer
b. : free of interruption or disturbance : quiet , uneventful
young men now arriving … at the age of forty have never known placid times as adults — J.D.Hicks
2.
a. : of a peaceable nature : meek , mild
a placid lamb lying fast asleep — Elinor Wylie
the relatively placid crime of horse lifting — W.B.Bracke
b. : characterized by unruffled composure : calm , phlegmatic
that placid force … in many farmers — Guy McCrone
so placid , so resigned that if the earth had opened at his feet he would have felt neither surprise nor fear — Herman Smith
specifically : complacent
an air of placid sufficiency which was the first hint … of the man's overweening, unmeasurable conceit — Joseph Conrad
Synonyms: see calm