反常

• 拼音: fǎn cháng
• 汉字拆解: 反 = 厂 + 又 — reversal; 常 = 巾 (cloth) + 尚 (revere/still) — a flag that remains constant, hence the norm or the usual

含义

Abnormal; unusual; contrary to what is expected or normal. Describes behaviour, conditions, or phenomena that deviate from the norm.

Used across scientific, medical, behavioural, and meteorological contexts. 反常 implies a deviation that is noticeable and potentially significant — not merely different, but strikingly contrary to established patterns. Often signals the need for investigation or concern.

例句

1. 气象专家指出，今年入春以来全国多地出现的持续低温属于极端反常天气，与近年来气候变化的大背景密切相关。
2. 侦探注意到死者的邻居在询问过程中表现得格外平静，这种在事发后反常的淡然令他产生了强烈的怀疑。
3. 这家公司的股价在毫无消息公布的情况下突然暴涨，如此反常的市场行为立刻引起了监管机构的注意，随即展开了内幕交易调查。

用法指南

语境: science, medicine, behaviour, meteorology

语气: analytical

正确说法

• 孩子若持续反常嗜睡、食欲骤降，家长应尽快带其就医。(If a child remains abnormally drowsy or suddenly loses appetite, parents should seek medical care promptly.)
• 南极海域反常升温可能加速冰川融化，并扰乱全球气候环流。(Abnormal warming in Antarctic waters may speed glacial melting and disrupt global climate circulation.)

错误说法

• 非常反常 — 非常 (very) and 反常 (abnormal) are semantically redundant since 反常 already implies notable deviation; use 极度反常 or 严重反常 if you need to intensify the degree of abnormality

起源与历史

反 (contrary to/against) + 常 (the norm/usual) — going against what is usual or established as normal

文化背景

世代: All ages

社会背景: Universal