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English definition of “sleek”

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sleek

adjective uk   /sliːk/ us  
(especially of hair, clothes, or shapes) smooth, shiny, and lying close to the body, and therefore looking well cared for; not untidy and with no parts sticking out: The cat had sleek fur. Who owns that sleek black car parked outside your house? disapproving He's one of those sleek (= seeming rich and dishonest) businessman types.
sleekly
adverb uk   /ˈsliː.kli/ us  
sleekness
noun [U] uk   /ˈsliːk.nəs/ us  
(Definition of sleek from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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