Definition of 'smarten up'

Verb

1. make neat, smart, or trim; "Spruce up your house for Spring"; "titivate the child"
      Synonyms: 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"
      Synonyms: spruce up spruce slick up

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