English Reference

Word

epidemic

Phoneticsepi·dem·ic

US/ˌɛpəˈdɛmɪk/

UK/ˌɛpɪdˈɛmɪk/

Definitions

01outbreak of disease

B2 · Upper Intermediate Countable noun Medicine

n. a large number of people in a community catching the same disease at the same time.

n. an outbreak of an infectious disease that spreads rapidly among many individuals in a population at a specific time.

“The city took quick action to stop the flu epidemic before schools opened.”

“Public health officials monitored the cholera epidemic closely, implementing strict water sanitation protocols to curb the rising infection rate.”

Usage

Often used with 'of' followed by the name of the disease.

02spread of something bad

C1 · Advanced Countable noun Informal

n. the sudden and quick spread of something harmful or unwanted, like crime or a bad habit.

n. a sudden, widespread occurrence of a particular undesirable phenomenon or social problem.

“The town is facing an epidemic of car thefts this summer.”

“Sociologists are investigating the current epidemic of loneliness among young adults living in major urban centres.”

Usage

Commonly used in journalism to describe social crises.

Synonyms

03widespread

C1 · Advanced Formal

adj. describing something that is spreading very fast and affecting many people.

adj. relating to or of the nature of an epidemic; extremely prevalent or widespread.

“The problem of fake news has reached epidemic proportions on social media.”

“The corruption within the local government became epidemic, eventually leading to a complete overhaul of the administrative staff.”

Usage

Usually precedes the noun it modifies.

Antonyms

Collocations

Common phrases and expressions where native English speakers use the word “epidemic” in context.

Verb

01. contain the epidemic

“Public health officials worked tirelessly to contain the epidemic before it reached the capital.”

verb + noun

02. halt the epidemic

“Strict quarantine measures were implemented to halt the epidemic in its tracks.”

verb + noun

03. trigger an epidemic

“Poor sanitation in the refugee camps could easily trigger a cholera epidemic.”

verb + noun

Adjective

04. silent epidemic

“Depression has become a silent epidemic among teenagers in the digital age.”

adj + noun

05. widespread epidemic

“The country is facing a widespread epidemic of obesity that threatens the healthcare system.”

adj + noun

Noun

06. epidemic proportions

“The use of synthetic drugs has reached epidemic proportions in many rural communities.”

noun + noun

07. outbreak of an epidemic

“The sudden outbreak of an epidemic caused widespread panic throughout the province.”

noun + of + noun

Preposition

08. at the height of the epidemic

“At the height of the epidemic, schools and businesses were forced to close indefinitely.”

prep + noun + prep

09. epidemic in the country's

Real-World Examples

“The loneliness epidemic, compounded by the era of constant digital distraction and social comparison, is a serious public health risk.”
The Guardian 14 Aug 2026
“Just three months into this Ebola emergency, the death toll is already close to the total number of people killed in the 2018 to 2020 epidemic, which saw fewer overall cases.”
UN News 11 Aug 2026
“The Ebola epidemic, centred on the Democratic Republic of the Congo has killed 625 people with 1,792 laboratory confirmed cases.”
BBC News 13 Jul 2026
“Janabi recently spent three days in Bunia, capital of Ituri province – his fifth visit since the epidemic was declared there on 15 May.”
UN News 10 Aug 2026

Etymology

From French épidémique, from épidémie, from Medieval Latin epidēmia, reanalysis of plural Late Latin epidēmia, from Ancient Greek ἐπιδήμιος (epidḗmios), from ἐπί (epí, “upon”) + δῆμος (dêmos, “people”). By surface analysis, epi- (“on”) + demic (“of the people”).

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

Related words

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 · AdvancedOxford
Updated

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