Main entry: still, tranquil, smooth, quiet, placid, unruffled
Definition: (of a body of water) free from disturbance by heavy waves
Usage: 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
Main entry: good-tempered, even-tempered, equable, placid
Definition: not easily irritated
Usage: an equable temper; not everyone shared his placid temperament; remained placid despite the repeated delays