hasty

Compared meaning: done too quickly, without enough thought (adjective).

比较义项：做事过快、考虑不周（形容词）。

• hasty 本词

  The mildest and most general word for acting or deciding too quickly without enough thought; neutral in tone, used for decisions, conclusions, retreats, or a person's temperament.

  语气最温和、用法最通用的词，指做决定或行事过快、考虑不周；语气中性，可用于决定、结论、撤退或人的性格。

  Don't be so hasty — think it over before you sign anything.

  别这么急躁——先把事情想清楚，再签任何东西。

• precipitous

  Strongly associated with a sudden, steep decline or drop in figures such as prices, rates, or sales; more formal, and rarely used to describe a person's own decision-making.

  强烈地与价格、比率、销量等数值的骤然、大幅下跌相关联；语气较正式，很少直接用来形容人做决定的方式。

  The company's precipitous decline in sales alarmed shareholders.

  公司销售额的骤然下滑令股东们感到震惊。

• hurried

  Emphasizes that the speed is caused by a lack of time; typically describes physical actions like meals, farewells, or departures rather than abstract decisions.

  强调匆忙的原因是时间不够；通常形容用餐、告别、出发等具体动作，而不是抽象的决定。

  She said a hurried goodbye before running to catch her train.

  她匆忙地道了别，然后跑去赶火车。

• headlong

  Emphasizes reckless, unthinking momentum, as if plunging forward without checking; often paired with verbs like rush or plunge, giving it a stronger, more dramatic tone.

  强调不顾一切、未经思考地猛冲向前，常与 rush、plunge 等动词搭配，语气更强烈、更具戏剧性。

  He plunged headlong into a risky investment without doing any research.

  他不假思索地一头扎进一项高风险投资，事先没有做任何调查。

All four mean acting too fast, without enough thought. Hasty is mildest, for decisions or character. Precipitous means a sudden drop, as in prices; formal. Hurried means rushed by lack of time. Headlong means reckless and unthinking. Not compared: precipitous's steep sense, headlong's head-first sense.

这几个词都表示做事过快、考虑不周，但语气和搭配不同：hasty 语气最中性，可用于决定、结论、撤退或性格；precipitous 常用于价格、比率等数值的骤然下跌，语气较正式；hurried 强调因时间不够而匆忙，多用于具体动作；headlong 强调不顾后果地鲁莽行事，语气更强烈。这里不比较 precipitous 表示“陡峭的”（如悬崖）的本义，也不比较 headlong 表示“头朝前猛冲”的字面动作意义。