English Reference

Word

overrun

Phoneticsover·run

/ˈoʊvɝˌɹən/

Definitions

01to swarm or infest

B2 · Upper Intermediate

v. to fill or spread over a place in large numbers, often in an annoying or harmful way.

v. to spread over or occupy a place in large numbers; frequently used in the context of pests, weeds, or invading forces.

“The old garden was completely overrun with weeds after months of neglect.”

“By mid-summer, the abandoned warehouse had been overrun by rodents, necessitating a professional intervention to secure the site.”

Synonyms

infestswarminvade

02to exceed a limit

B2 · Upper Intermediate

v. to go past a set limit, such as a time or a budget.

v. to exceed a predetermined limit, especially regarding time, budget, or scheduled duration.

“The meeting was supposed to end at noon, but it overran by twenty minutes.”

“The construction project overran its original budget by nearly thirty percent due to unforeseen structural issues in the foundation.”

Synonyms

03an excess amount

B2 · Upper Intermediate Countable noun

n. the amount by which something goes over its limit.

n. an instance or amount of exceeding a limit, typically in a financial or temporal context.

“The government had to explain the massive cost overrun on the new bridge.”

“Despite strict oversight, the project suffered a significant time overrun, pushing the launch date into the following fiscal year.”

Synonyms

Antonyms

04aviation safety zone

C1 · Advanced Countable noun Science Technical

n. an area at the end of a runway where a plane can stop safely if it goes too far.

n. a cleared area of terrain beyond the end of a runway designed to allow an aircraft to decelerate safely in the event of an aborted takeoff or landing roll.

“The pilot managed to stop the plane in the overrun area without any injuries.”

“Airport regulations require the overrun to be kept clear of all obstacles to ensure maximum safety during emergency braking maneuvers.”

Synonyms

safety areastopway

05food production

C2 · Proficiency Uncountable noun Cooking Technical

n. the air that is mixed into ice cream to make it light and soft.

n. the increase in volume of a frozen dessert caused by the incorporation of air during the freezing process.

“Cheap ice cream often has a high overrun, making it feel very light and airy.”

“Premium gelato is characterized by a low overrun, resulting in a denser texture and more intense flavor profile than standard commercial ice cream.”

Synonyms

aeration

Real-World Examples

“Such is the craze in the country that a town near Mount Fuji cancelled this year’s festivities because it was being overrun by visitors in search of “Instagrammable” spots.”
The Guardian 19 Apr 2026

Etymology

From over- + run.

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

Domains

AviationPrinting

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.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL 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: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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English Reference