critical

Compared meaning: expressing strong disapproval (adjective).

比较义项：批评的，尖刻的（形容词，表达不满或负面评价）。

• critical 本词

  Critical is the general, neutral-register word for expressing disapproval, ranging from mild to strong; it is used broadly, as in being critical of a decision, plan, or someone's work.

  critical是表达不满的通用、中性词，程度可轻可重，用法广泛，例如对某个决定、计划或某人的工作表示批评（“critical of”）。

  The teacher was mildly critical of the students' spelling mistakes.

  老师对学生们的拼写错误提出了些许批评。

• scathing

  Scathing describes criticism that is severe, harsh, and often biting in tone; it typically modifies nouns like review, attack, or comment, and rarely takes 'of'.

  scathing形容措辞严厉、尖锐、带有伤害性的批评，通常用来修饰review、attack、comment等名词，很少与“of”连用。

  The critic wrote a scathing review of the new restaurant.

  那位评论家写了一篇措辞尖刻的餐厅评论。

Critical and scathing both mean expressing disapproval, but strength differs. Critical is the general, neutral word for disapproval, ranging from mild to strong, as in critical of a decision. Scathing describes criticism that is severe and biting, usually describing a review, attack, or comment.

critical和scathing都可表示“批评的”，但语气强弱不同：critical泛指提出批评或负面评价，程度可轻可重；scathing则指措辞尖锐、毫不留情、带有伤害性的严厉批评，语气强烈得多。这里不比较critical表示“至关重要的”这一义项（如“critical for survival”）。

Compared meaning: extremely important, essential (adjective).

比较义项：极其重要，不可或缺（形容词）。

• critical 本词

  Critical often implies that without this thing, something bad, dangerous, or fatal could happen; common with health, safety, and survival.

  critical 常暗示如果缺少这件事，可能会带来严重的、甚至危险的后果；常与健康、安全、生存等词搭配使用。

  Clean water is critical for people's health and survival.

  干净的水对人类的健康和生存至关重要。

• crucial

  Crucial is a more neutral way to say something is extremely important or decisive, without necessarily implying danger; often used for decisions, roles, or factors leading to success.

  crucial 语气更中性，表示某事极其重要或起决定性作用，但不一定暗示危险；常用于描述决定、角色或导致成功的因素。

  Sleep is crucial for staying healthy and focused.

  睡眠对保持健康和专注至关重要。

• pivotal

  Pivotal highlights that something is the central point other things depend on or turn around, often describing a moment, role, or decision rather than a physical need like health.

  pivotal 强调某事物是其他事物所依赖或围绕转动的核心点，常用于描述某个时刻、角色或决定，而不是像健康这样的生理需求。

  That meeting was pivotal in deciding the company's future plans.

  那次会议对决定公司的未来计划起到了关键性的作用。

Critical, crucial, and pivotal all mean extremely important. Critical implies that without this thing, something bad could happen. Crucial means very important. Pivotal means the central point other things depend on. Critical's 'fault-finding' sense and pivotal's 'turning on a pivot' sense are not compared.

这三个词在此义项上都表示“极其重要”，但语气和使用场合略有不同：critical 常暗示缺少此事物会带来严重甚至危险的后果，crucial 语气更中性，强调对结果起决定性作用而不一定涉及危险，pivotal 则强调该事物是其他事情所依赖或围绕的核心、转折点。这里不比较 critical 表示“批评的、挑剔的”这一义项，也不比较 pivotal 表示“在枢轴上转动的”这一字面义项。

Compared meaning: very serious or dangerous (adjective).

比较义项：严重的、危险的（程度深、情况危急）（形容词）。

• critical 本词

  Used mainly for a point where someone's life is in immediate danger, especially in medicine ('critical condition'); also suggests a decisive turning point. More clinical and urgent than serious.

  主要用于形容生命垂危、情况危急的时刻，尤其用在医学语境中（如“病危”）；也可表示决定性的关键时刻。语气比 serious 更专业、更紧迫。

  After the crash, the driver was rushed to hospital in critical condition.

  车祸后，司机被紧急送往医院，伤势危重。

• serious

  The mildest, most general term here, covering injuries, illnesses or problems that are bad but not necessarily life-threatening. Fits many everyday situations where the other three would sound too strong.

  四个词中语气最温和、最笼统，可泛指伤情、疾病或问题“严重”，但不一定危及生命。适用于许多日常场合，换成其他三个词会显得语气过重。

  He suffered a serious knee injury that kept him out of sport for months.

  他膝盖严重受伤，好几个月都不能参加运动。

• dire

  The strongest word here, stressing extreme severity and urgency and often warning of a bad outcome to come. Typically fixed with 'need', 'consequences' or 'straits'; sounds dramatic or literary.

  四个词中语气最强，强调程度极其严重、情况紧迫，常带有警示即将发生坏结果的意味。常与“需要”（need）、“后果”（consequences）、“困境”（straits）等词固定搭配，语体偏夸张、文学化。

  After the earthquake, survivors were in dire need of food, water and shelter.

  地震过后，幸存者们极度需要食物、水和住所。

• severe

  Focuses on the intensity of something bad, such as pain, weather, damage or punishment, without necessarily implying danger to life. Common with weather, injuries and penalties.

  侧重形容坏事的强度或程度，例如疼痛、天气、损失或惩罚，但不一定意味着生命垂危。常与天气、伤情和处罚等词搭配使用。

  The storm caused severe damage to the old bridge, closing it for repairs.

  那场暴风雨给那座老桥造成了严重损坏，桥梁因此关闭维修。

Critical, serious, dire and severe all describe something dangerous, but strength differs. Critical means life is in immediate danger. Serious is mildest, covering bad but not life-threatening problems. Dire is strongest, warning of extreme danger. Severe stresses intensity, like pain or weather, without implying danger.

这四个词都可用来形容伤情、天气或局势的严重、危险程度，但紧迫感和语气强弱不同：dire 语气最强，serious 语气最温和；这里不比较 critical 表示“批评的”这一义项，也不比较 serious 表示人的神情或态度“严肃认真”的这一义项。