Something abnormal is very different from the usual pattern, and that difference feels strange, worrying, wrong, or even dangerous — not merely a bit special or a bit rare.

Something abnormal is very different from the usual pattern說一個東西abnormal，是跟一般的樣子差很多，and that difference feels strange, worrying, wrong, or even dangerous而且這種不同讓人覺得奇怪、擔心、不對勁，甚至有點危險——not merely a bit special or a bit rare不只是稍微特別或稀有而已。

Doctors and scientists use it a lot: an abnormal test result, abnormal cells, abnormal bleeding. Weather, prices, and behaviour can also be called abnormal when they sit far from what people expect.

Doctors and scientists use it a lot醫生和科學家很常用這個字：an abnormal test result, abnormal cells, abnormal bleeding異常的檢查結果、異常的細胞、異常出血。Weather, prices, and behaviour can also be called abnormal天氣、物價、行為也可以說abnormal，when they sit far from what people expect只要它們離大家預期的樣子很遠。

In ordinary talk, putting abnormal on a person can sound cold or unkind, as if they were a problem to fix; unusual or different is gentler. Though actually, casual not normal often only means weird or not like me. In careful English, abnormal is stronger and more serious: something may need a second look.

In ordinary talk, putting abnormal on a person can sound cold or unkind在日常對話裡，把abnormal用在一個人身上，聽起來可能有點冷漠或不厚道，as if they were a problem to fix好像把他們當成需要解決的問題；unusual or different is gentler用unusual或different感覺比較溫和。Though actually不過實際上，casual not normal often only means weird or not like me口語裡的not normal常常只是說怪怪的、跟我不一樣而已。In careful English在講究一點的英文裡，abnormal is stronger and more seriousabnormal語氣比較重、比較嚴肅：something may need a second look代表可能得再看仔細一點。

It is mainly an adjective.

It is mainly an adjective它主要是一個形容詞。