Source : WordNet®

spiffy
     adj : marked by smartness in dress and manners; "a dapper young
           man"; "a jaunty red hat" [syn: {dapper}, {dashing}, {jaunty},
            {natty}, {raffish}, {rakish}, {smart}, {snappy}, {spruce}]
     [also: {spiffiest}, {spiffier}]

spiffier
     See {spiffy}