amphetamine

/æmˈfetəmiːn/ (bre, ipa) · /æmˈfetəmiːn/ (ame, ipa) · /am-ˈfe-tə-ˌmēn -mən/ (ame, mw)

amphetamine — noun

  • amphetaminesingular
  • amphetaminesplural

1. a powerful chemical drug that speeds up activity in the brain and body, prescrib

1.名詞B2
釋義

a powerful chemical drug that speeds up activity in the brain and body, prescribed by doctors for conditions such as ADHD and narcolepsy, and sometimes misused by people wanting to stay alert or feel more energetic.

例句

Diego's doctor prescribed a low dose of amphetamine to help him focus at school.

prescribed amphetamine for ADHD treatment

The police found a bag of amphetamine pills hidden in the back of the car.

amphetamine pills as illicit drug

同義詞
  • stimulant

    a broad category; amphetamine is one type of stimulant

  • speed

    slang term for amphetamine when used as an illegal recreational drug

  • uppers

    informal slang for stimulant drugs including amphetamine

反義詞
  • depressant

    a drug that slows down the body and mind, producing the opposite effect of a stimulant

文法句型

amphetamine as uncountable (substance in general)

amphetamines as countable (specific pills or doses)

用法筆記

As an uncountable noun, amphetamine refers to the drug in general ('He was arrested for possession of amphetamine'). As a countable plural noun (amphetamines), it often refers to specific pills or doses ('Some students use amphetamines to stay awake while studying').

常見錯誤

❌He was prescribed amphetamines for his headache.
✅He was prescribed amphetamines for his ADHD.
💡Amphetamines are stimulants for ADHD and narcolepsy, not a treatment for headaches.