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

smarten (sb/sth) up

UK informal phrasal verb with smarten     /ˈsmɑːtən/ verb
to improve your personal appearance or the appearance of something: You'll need to buy a suit and smarten up a bit for the interview . Staff were told to smarten themselves up for the inspection visit . They've smartened up the design of their webpage.
(also smarten up your act) to begin working more effectively : Poor performers need to smarten up quickly if they want to keep their jobs . The industry needs to smarten up its act in relation to advertising and promotion .
(Definition of smarten (sb/sth) up from the Cambridge Business English Dictionary © Cambridge University Press)
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