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English definition of “swell”

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swell

verb
 
 
/swel/ ( past tense swelled, past participle swollen, swelled)
SIZE [I] ( also swell up) to increase in size: One side of his face had swollen up where he'd been stung.Enlarging and inflatingBecoming bigger
AMOUNT [I, T] to increase in amount because more things are added: The population of the region was swollen by refugees from across the border.Enlarging and inflatingBecoming biggerIncreasing and intensifying
(Definition of swell verb from the Cambridge Learners Dictionary © Cambridge University Press)
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