A sicko is a person who enjoys things most people find disgusting or frightening — cruelty, violence, or sexual things involving children or pain. It is a strong insult and always an insult; you call someone a sicko, you never call yourself one seriously.

A sicko is指 a person who enjoys things一個很享受 most people find disgusting or frightening大部分人覺得噁心或可怕的事情的人——cruelty, violence, or sexual things involving children or pain像是殘忍、暴力、或涉及兒童或痛苦的性方面的事。It is a strong insult這是個很重的侮辱字眼 and always an insult而且永遠是侮辱；you call someone a sicko你會用這個字罵別人，you never call yourself one seriously你絕對不會認真地這樣叫自己。

It is informal American-flavoured slang, common in speech, in comments online and in tabloid headlines, and out of place in an essay or a report. The feeling behind it is disgust plus fear, and people often say it about criminals in the news: "the sicko who did this". It can also be used as an adjective — sicko stuff, a sicko joke — though the noun is far more common.

It is informal American-flavoured slang這是帶美式口味的口語俚語，common in speech, in comments online and in tabloid headlines常出現在口語、網路留言、和八卦小報標題裡，and out of place in an essay or a report但用在論文或報告裡就顯得不搭。The feeling behind it is disgust plus fear它背後的感覺是噁心加上害怕，and people often say it about criminals in the news大家常常拿它來說新聞裡的罪犯："the sicko who did this"「the sicko who did this」（做出這種事的變態）。It can also be used as an adjective它也可以當形容詞用——sicko stuff「sicko stuff」（變態的東西）、a sicko joke「a sicko joke」（一個變態的笑話）——though the noun is far more common不過名詞用法還是常見得多。

Two things worth knowing. First, it is much stronger than "weird": calling a classmate a sicko is a real accusation, not teasing. Second, because it treats mental illness as a moral fault, many careful speakers avoid it, and it is never the right word for someone who is genuinely unwell in the mind.

Two things worth knowing有兩件事值得知道。First第一，it is much stronger than它比 "weird"「weird」（怪怪的） much stronger強烈得多：calling a classmate a sicko把同學叫做sicko is a real accusation是真正的指控，not teasing而不是在鬧著玩。Second第二，because it treats mental illness as a moral fault因為這個字把心理疾病當成是一種道德上的過錯，many careful speakers avoid it很多講話講究的人會避開它，and it is never the right word而它絕對不是對的用詞 for someone who is genuinely unwell in the mind用來形容真的心理生病的人。

Note also that it is not related to "sick" meaning excellent in young people's slang ("that's sick!" = that's great) — a sicko is never a compliment.

Note also另外也要注意 that it is not related to它跟 "sick" meaning excellent in young people's slang年輕人俚語裡表示「超讚」的「sick」 ("that's sick!" = that's great)（「that's sick!」＝那太棒了）沒有關係——a sicko is never a compliment sicko永遠不是稱讚的話。