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English definition of “vermin”

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vermin

noun [plural] uk   /ˈvɜː.mɪn/ us    /ˈvɝː-/
small animals and insects that can be harmful and are difficult to control when they appear in large numbers: Flies, lice, and cockroaches can all be described as vermin. offensive disapproving people who are unpleasant and harmful to society: He thought all terrorists were vermin.
(Definition of vermin from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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