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English definition of “smarten (sb/sth) up”

smarten (sb/sth) up

mainly UK phrasal verb with smarten     /ˈsmɑː.tən/ US  /ˈsmɑːr-/ verb
to ( cause to) become more clean , tidy , and stylish : She's really smartened her self up since she left university . You'll have to smarten up if you want to work in television .Cleaning and tidying places and thingsSmart and elegantAttractive
(Definition of smarten (sb/sth) up from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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