English Reference

Word

psychoactive

Phoneticspsy·choac·tive

UK/sˌaɪkəʊˈæktɪv/

Definition

adj. describes a substance that changes how your mind works, usually by making you feel different or more alert. You use this word for things like coffee, tea, or medicine that affect your brain.

adj. relating to or capable of affecting the mind or mental processes. Often used to describe substances that alter consciousness or perception.

Examples

“Caffeine is a mild psychoactive substance found in coffee.”

“The researcher studied how different psychoactive compounds affect the brain's ability to process visual information.”

“While many plants contain psychoactive alkaloids, only a few have been cultivated for their medicinal properties rather than their recreational effects.”

Examples

simple

“Caffeine is a mild psychoactive substance found in coffee.”

contextual

“The researcher studied how different psychoactive compounds affect the brain's ability to process visual information.”

complex

“While many plants contain psychoactive alkaloids, only a few have been cultivated for their medicinal properties rather than their recreational effects.”

Real-World Examples

“There have long been fanciful tales of hippies getting high by licking toads, but these ones are the real deal: the world’s only known psychoactive animal.”
The Guardian 17 Aug 2026
“Both pilots underwent routine post-flight screening for psychoactive substances, India's aviation ministry said.”
BBC News 15 Aug 2026

Etymology

From psycho- + active.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Occasional
Level
C1 · Advanced
Updated

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