acute

/əˈkjuːt/ (bre, ipa) · /əˈkjuːt/ (ame, ipa) · /ə-ˈkyüt/ (ame, mw)

acute — 形容詞

1. causing very serious difficulty and needing fast action because the harm is alre

1.形容詞C1
釋義

嚴峻;危急

情勢嚴重且急需處理

causing very serious difficulty and needing fast action because the harm is already great or getting worse.

例句

The town faced an acute water shortage after three weeks without rain.

連續三週沒下雨後,這個城鎮面臨嚴峻的缺水問題。

acute shortage of + noun

Doctors warned of an acute lack of beds after the factory fire.

工廠失火後,醫師警告病床將嚴重不足。

acute lack of + noun

同義詞
  • severe

    close in meaning, but less strongly linked to urgency

  • critical

    stresses a danger point where immediate action may decide the result

  • grave

    more formal and often used for very bad news or risks

  • pressing

    focuses on urgency more than on damage already caused

反義詞
  • minor

    describes something small and not very serious

  • manageable

    suggests the problem can be handled without major difficulty

文法句型

acute + problem/situation/shortage

be in acute need of + noun

acute lack/shortage of + noun

用法筆記

Usually modifies nouns such as shortage, need, danger, crisis, and pressure. Distinguish this sense from adjective/2: this one describes a serious situation, not a health problem or physical pain.

常見錯誤

We had an acute picnic problem because the cake was small.
The camp faced an acute food shortage after the truck broke down.
💡Use this sense for major problems, not small inconveniences.

2. appearing suddenly and becoming very painful or dangerous within a short time, e

2.形容詞C1
釋義

急性;劇痛

病痛突然發作且很嚴重

appearing suddenly and becoming very painful or dangerous within a short time, especially of illness or physical pain.

例句

Nina went to the hospital with acute chest pain after lunch.

妮娜午餐後因急性胸痛去了醫院。

acute + pain noun

The doctor treated an acute ear infection before it spread deeper.

醫師在感染往更深處擴散前治療了急性耳部感染。

acute + illness noun

同義詞
  • sharp

    often used especially for pain; less medical in tone

  • severe

    broader and does not by itself suggest sudden onset

  • sudden

    emphasizes speed of onset, not how serious the condition becomes

反義詞
  • chronic

    medical opposite for long-lasting conditions

  • mild

    describes symptoms that are not strong or dangerous

文法句型

acute + pain/illness/infection

acute pain in + body part

acute + medical condition

用法筆記

Mostly used in medical contexts and often placed before pain or illness nouns. Frequently contrasted with chronic, which describes conditions that last a long time instead of starting suddenly.

常見錯誤

My acute back problem has lasted for ten years.
My chronic back problem has lasted for ten years.
💡'acute' usually describes a sudden, short, severe condition, unlike 'chronic'.

3. quick and exact at noticing fine detail or understanding what is happening; used

3.形容詞C1
釋義

敏銳的

能察覺細微差別

quick and exact at noticing fine detail or understanding what is happening; used about the mind, senses, or observation.

例句

With her acute hearing, Mei noticed the weak alarm first.

憑著敏銳的聽力,美先注意到那個微弱的警報聲。

acute + sense noun

The detective's acute eye spotted a missing button on the floor.

偵探以敏銳的眼力發現地板上少了一顆鈕扣。

acute eye

同義詞
  • keen

    very close in meaning and common with senses or intelligence

  • sharp

    more everyday; often used for minds and eyes

  • perceptive

    focuses on understanding hidden details or other people's feelings

  • observant

    stresses careful noticing more than quick intelligence

反義詞
  • dull

    not quick at noticing or understanding

  • unobservant

    fails to notice details

文法句型

acute + mind/eye/ear/sense

acute awareness of + noun

acute comment/observation

用法筆記

Common with nouns like mind, eye, ear, sense, and awareness. Unlike adjective/1 and adjective/2, this sense is positive and describes skill in noticing or understanding small differences.

常見錯誤

The camera is acute, so it takes clear photos.
The camera is sharp, so it takes clear photos.
💡This sense usually describes people, senses, or mental abilities, not machines.

4. describing an angle that opens less than ninety degrees.

4.形容詞B2
釋義

銳角的

角度小於九十度

describing an angle that opens less than ninety degrees.

例句

Each triangle in the pattern has two acute angles.

這個圖案中的每個三角形都有兩個銳角。

acute angles

Draw an acute angle at the top of the roof shape.

在屋頂形狀的頂端畫一個銳角。

acute angle

同義詞
  • narrow

    a plain-language description, not a technical geometry term

  • sharp

    informal description of how the angle looks

反義詞
  • obtuse

    describes an angle greater than 90 degrees and less than 180

  • right

    describes an angle of exactly 90 degrees

文法句型

acute angle

angle is acute

用法筆記

Used almost only in geometry. It usually appears with angle or after be when naming the size of an angle, and it contrasts with right and obtuse.

常見錯誤

A 120-degree angle is acute.
A 120-degree angle is obtuse.
💡Acute angles are below 90 degrees.

acute — 名詞