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English definition of “hot up”

hot up

UK informal phrasal verb with hot
 
 
/hɒt/ verb (present participle hotting, past tense and past participle hotted)
If a situation or event hots up, it becomes more exciting and more things start to happen: The competition is really hotting up now.Making things betterBecoming better
(Definition of hot up from the Cambridge Learners Dictionary © Cambridge University Press)
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