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English definition of “step sth up”

step sth up

verb [I + adv/prep] uk phrasal verb with step   /step/ (-pp-) us  
to increase the size, amount, or speed of a process that is intended to achieve something: The police are stepping up their efforts to fight crime. Security has been stepped up at the airport.Increasing and intensifying
(Definition of step sth up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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