English Reference

Word

suppression

Phoneticssup·pres·sion, stress on the second syllable

US/səˈpɹɛʃən/

UK/səpɹˈɛʃən/

Definitions

01stopping by force

C1 · Advanced Uncountable noun Formal

n. the act of using force to stop something from happening or being known.

n. the forceful prevention of an action, process, or the public disclosure of information.

“The government was criticized for the suppression of free speech during the protests.”

“The systematic suppression of dissent within the occupied territories led to a significant humanitarian crisis that drew international condemnation.”

Usage

Often followed by the preposition 'of'.

Synonyms

02hiding feelings

C1 · Advanced Uncountable noun Psychology Academic

n. the act of choosing to ignore or hide a difficult thought or feeling.

n. the conscious exclusion of painful or socially unacceptable impulses, thoughts, or memories from the mind.

“The suppression of his anger eventually led to a lot of stress.”

“Psychologists distinguish between suppression, which is a conscious effort, and repression, which occurs at an unconscious level.”

Teaching tip

In psychology, emphasize that suppression is a deliberate choice, unlike repression which is automatic.

Antonyms

03military fire

C2 · Proficiency Uncountable noun Military Technical

n. firing weapons at an enemy to stop them from moving or firing back.

n. tactical fire intended to degrade the performance of an enemy force below the level needed to fulfill its mission.

“The squad provided suppression so their teammates could move to safety.”

“Effective suppression requires a high volume of accurate fire to ensure the enemy remains behind cover during the infantry advance.”

Synonyms

neutralizationpinning down

04medical/biological

C1 · Advanced Uncountable noun Medicine Technical

n. the act of stopping a natural process in the body, like an allergy or a cough.

n. the inhibition of a physiological process or the activity of an organ or system.

“The medication resulted in the suppression of her immune system.”

“The clinical trial focused on the long-term suppression of viral replication in patients who had not responded to traditional therapies.”

Antonyms

Real-World Examples

“A 2026 study identified a link between the amino acid leucine and appetite suppression through a connection between the gut and the brain.”
The Conversation 21 Aug 2026
“The study reveals that this decline in WUE is primarily driven by PM 2.5 -induced suppression of photosynthesis—the process by which plants gain carbon—rather than changes in evapotranspiration (water loss).”
Phys.org 20 Aug 2026

Etymology

From Latin suppressiō.

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

Word family

NOUN

suppression(C1)

Domains

MilitaryPsychology

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
Frequent
Level
C1 · Advanced
Updated

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English Reference