(of a body of water) free from disturbance by heavy waves; 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; unruffled water

[ Syn: quiet , still , tranquil , smooth , unruffled ]

not easily irritated; an equable temper; not everyone shared his placid temperament; remained placid despite the repeated delays

[ Syn: equable , even-tempered , good-tempered ]