ENGLISH
REFERENCE

overrun

n. countable
B2 Upper Intermediate US //ˈoʊvɝˌɹən// over·run

n. an instance where something goes over its expected limit, such as time or money. It is common in business when a project costs more than the original plan.

n. an instance of exceeding a predetermined limit, such as a budget, schedule, or capacity. Often used in technical or project management contexts to describe resource exhaustion.


SIMPLE

The project suffered a massive cost overrun.

CONTEXTUAL

The construction of the new stadium faced a two-year schedule overrun due to unexpected soil issues.

COMPLEX

While minor delays are expected in large-scale infrastructure, a significant budget overrun can lead to political scrutiny and the immediate suspension of secondary contracts.

Synonyms
Origin

From over- + run.

Usage

Commonly used in compound forms like 'cost overrun' or 'time overrun'.

© 2026 English Reference