Verb smarten up has 2 senses
  1. spruce up, spruce, titivate, tittivate, smarten up, slick up, spiff up - make neat, smart, or trim; "Spruce up your house for Spring"; "titivate the child"
    --1 is one way to beautify, embellish, prettify
    Sample sentences:
    Somebody ----s something
    Something ----s somebody
    Something ----s something
  2. spruce up, spruce, slick up, smarten up - dress and groom with particular care, as for a special occasion; "He spruced up for the party"
    --2 is one way to groom, neaten
    Sample sentences:
    Somebody ----s
    Somebody ----s somebody
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