If someone is homicidal, they are likely to kill a person, or they are in a state of mind where killing a person is in view. Doctors, police, and courts use it in a serious, almost clinical way: a homicidal threat, homicidal rage, a homicidal patient. The word always points at the killing of a human being, not an animal.

If someone is homicidal如果一個人是homicidal，they are likely to kill a person表示他很可能會殺人，or they are in a state of mind where killing a person is in view或者他的心理狀態已經把殺人這件事納入考慮。Doctors, police, and courts use it in a serious, almost clinical way醫生、警察、法院會用一種嚴肅、近乎臨床的方式使用這個字：a homicidal threat, homicidal rage, a homicidal patienta homicidal threat（殺人威脅）、homicidal rage（想殺人的暴怒）、a homicidal patient（有殺人傾向的病人）。The word always points at the killing of a human being, not an animal這個字指的永遠是殺害一個人，不是殺害動物。

In ordinary talk people stretch it as dark humour — “this traffic is making me homicidal” — and they do not mean they will murder anyone; they mean they are extremely angry. That joke use is common, but it is not kind in a real, frightening situation, and it is too heavy for careful writing if all you mean is “very cross.”

In ordinary talk people stretch it as dark humour在日常對話裡，人們會拿它來開一種黑色幽默的玩笑——"this traffic is making me homicidal"像「this traffic is making me homicidal（這種塞車快把我逼瘋、想殺人了）」——and they do not mean they will murder anyone並不是真的說要殺誰；they mean they are extremely angry而是說自己氣到極點。That joke use is common這種開玩笑的用法很常見，but it is not kind in a real, frightening situation但在真實、令人害怕的情況下這樣講並不厚道，and it is too heavy for careful writing if all you mean is "very cross."而且如果你只是想表達「很生氣」，用這個字對講究用詞的寫作來說又太重了。