free from disturbance; "a ribbon of sand between the angry sea and the placid bay"; "the quiet waters of a lagoon"; "a lake of tranquil blue water reflecting a tranquil blue sky"; "a smooth channel crossing"; "scarcely a ripple on the still water"; "unruf;
taking life easy; "an easygoing man rarely stirred to anger"; "an air of placid sufficiency";
without untoward incident or disruption; "a placid existence"; "quiet times";
not easily irritated; "an equable temper"; "not everyone shared his placid temperament"; "remained placid despite the repeated delays";
