onrush

Onrush is a noun that describes a sudden forward rush or surge of a person, force, or phenomenon. It conveys momentum and speed, often implying an overwhelming or unstoppable approach.

The word is a compound of on and rush, with attestations dating from the 19th century. It is commonly used in both literal contexts—such as the onrush of waves, floodwaters, or a crowd—and figuratively, to describe a rapid sequence of events or emotions.

Usage is varied. In natural settings, onrush refers to the sudden arrival of a wave, tide, flood, or avalanche. In crowds or sports, it can describe a mass advance or charging movement. It can also describe a rapid, forceful change in conditions, such as an onrush of wind or heat, or an onrush of competition or feelings.

In popular culture, Onrush is the title of a 2018 arcade racing video game developed by Evolution Studios and published by Deep Silver. The term itself remains a versatile descriptor for sudden, overwhelming push or inflow across contexts.