Source : WordNet®

smarten up
     v 1: make neat, smart, or trim; "Spruce up your house for
          Spring"; "titivate the child" [syn: {spruce up}, {spruce},
           {titivate}, {tittivate}, {slick up}, {spiff up}]
     2: dress and groom with particular care, as for a special
        occasion; "He spruced up for the party" [syn: {spruce up},
         {spruce}, {slick up}]