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English definition of “sucker”

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sucker

noun [C]
 
 
/ˈsʌkər/
PERSON informal someone who believes everything that you tell them and is easy to deceiveNaive and trustingInexperienced (of people)Stupid and silly people
PART something that helps an animal or object stick to a surfaceThe legs and feet of non-human animalsThe head and neck of non-human animals
(Definition of sucker from the Cambridge Learners Dictionary © Cambridge University Press)
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