tranquil
     adj 1: characterized by absence of emotional agitation; "calm
            acceptance of the inevitable"; "remained serene in the
            midst of turbulence"; "a serene expression on her
            face"; "she became more tranquil"; "tranquil life in
            the country" [syn: {calm}, {serene}]
     2: 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"; "unruffled water" [syn: {placid}, {quiet},
         {still}, {unruffled}]
Source: WordNet® 2.0