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sicko

noun [C]
 
 
/ˈsɪk.əʊ/ US  /-oʊ/ (plural sickos) slang

Definition

someone, especially a man, who is mentally ill or who performs unpleasant, often sexual, acts: She's afraid of being attacked in the park by a sicko.Strange, suspicious and unnatural things and people sicko
 
 
adjective
(Definition of sicko noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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