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English definition of “jolly sth up”

jolly sth up

UK informal phrasal verb with jolly     /ˈdʒɒl.i/ US  /ˈdʒɑː.li/ verb [T + adv/prep] informal
to make something brighter and more attractive: I thought I'd jolly the room up with some colourful curtains.Decorating or making something attractive
(Definition of jolly sth up from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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