controlled substance: meaning, definition, pronunciation and examples
C1Formal, Legal, Medical, Journalistic
Quick answer
What does “controlled substance” mean?
A drug or chemical whose manufacture, possession, or use is regulated by a government, typically because of its potential for abuse or addiction.
Audio
Pronunciation
Definition
Meaning and Definition
A drug or chemical whose manufacture, possession, or use is regulated by a government, typically because of its potential for abuse or addiction.
Any substance subject to legal restrictions due to its psychoactive, addictive, or harmful properties, often classified into schedules or categories based on medical use and abuse potential.
Dialectal Variation
British vs American Usage
Differences
The term is used identically in legal and formal contexts in both varieties. In informal British English, 'illegal drug' or the specific drug name is more common, whereas American English uses 'controlled substance' more frequently in media and official discourse.
Connotations
In both varieties, it carries strong legal/regulatory connotations. In the UK, it may sound slightly more technical or official; in the US, it is a standard term in law enforcement and public health.
Frequency
Higher frequency in American English due to the prominence of the 'Controlled Substances Act' (US federal law). Common in UK legal and parliamentary contexts.
Grammar
How to Use “controlled substance” in a Sentence
[Verb] + controlled substance: possess, distribute, manufacture, prescribe, classify[Adjective] + controlled substance: illegal, scheduled, prescription, bannedVocabulary
Collocations
Examples
Examples of “controlled substance” in a Sentence
verb
British English
- The authorities controlled the substance under the Misuse of Drugs Act.
- New compounds are being controlled to prevent abuse.
American English
- The DEA moved to control the substance last year.
- State legislatures can vote to control a substance.
adverb
British English
- [No standard adverbial form for this noun phrase]
American English
- [No standard adverbial form for this noun phrase]
adjective
British English
- He was arrested for controlled-substance offences.
- The controlled-substance regulations are very strict.
American English
- She faced controlled-substance charges.
- The pharmacy has a controlled-substance log.
Usage
Meaning in Context
Business
Rare, except in pharmaceutical compliance or logistics (e.g., 'The shipment contains controlled substances requiring special documentation.')
Academic
Common in law, criminology, pharmacology, and public health research papers.
Everyday
Used in news reports or formal discussions about drug laws; less common in casual conversation.
Technical
Precise legal term used in statutes, medical guidelines, and law enforcement protocols.
Vocabulary
Synonyms of “controlled substance”
Strong
Neutral
Weak
Vocabulary
Antonyms of “controlled substance”
Watch out
Common Mistakes When Using “controlled substance”
- Using 'control substance' (missing the -ed).
- Confusing with 'controlled experiment'.
- Using in overly casual contexts where 'drugs' or 'medication' is more appropriate.
FAQ
Frequently Asked Questions
Not exactly. Some controlled substances (like certain prescription painkillers) are legal with a prescription but illegal without one. 'Illegal drug' usually refers to substances illegal under all circumstances.
Governments and international bodies (like the UN) decide. In the US, the Drug Enforcement Administration (DEA) classifies drugs under the Controlled Substances Act. In the UK, it's done under the Misuse of Drugs Act 1971.
Yes. Many are used legally in medical settings with proper authorisation (e.g., morphine for pain, stimulants for ADHD). The 'control' refers to regulation, not an absolute ban.
Typically, no. Alcohol is regulated separately under specific laws (like licensing). The term 'controlled substance' usually refers to drugs listed in specific narcotics or drug misuse legislation.
A drug or chemical whose manufacture, possession, or use is regulated by a government, typically because of its potential for abuse or addiction.
Controlled substance is usually formal, legal, medical, journalistic in register.
Controlled substance: in British English it is pronounced /kənˌtrəʊld ˈsʌbstəns/, and in American English it is pronounced /kənˌtroʊld ˈsʌbstəns/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms for this specific term]”
Learning
Memory Aids
Mnemonic
Think of a 'substance' in a 'controlled' environment like a pharmacy safe – it's locked up because the law says so.
Conceptual Metaphor
SUBSTANCES ARE PRISONERS (they are 'scheduled', 'controlled', 'restricted').
Practice
Quiz
What is the primary meaning of 'controlled substance'?