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onrush

American  
[on-ruhsh, awn-] / ˈɒnˌrʌʃ, ˈɔn- /

noun

  1. a strong forward rush, flow, etc.

    Synonyms:
    charge, flood, torrent, onset

onrush British  
/ ˈɒnˌrʌʃ /

noun

  1. a forceful forward rush or flow

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of onrush

1835–45; on + rush 1, after the verb phrase rush on

Explanation

When something moves forward in a great surge, it's called an onrush. When a dam breaks during a flood, it causes an onrush of water and you better have your raft at the ready. You can talk about an onrush of sea water spilling over the side of a ship, or the onrush of military troops into a newly seized area, or an onrush of gale force winds during a hurricane. You can also use this noun figuratively, to describe emotions that rise very suddenly: "An onrush of grief made his eyes fill with tears." Onrush probably grew out of the verb phrase "rush on" in the 1840s.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The album’s subdued arrangements and upfront vocals offer a chance to focus on lyrics that were obscured in the onrush of U2’s original versions.

From New York Times Mar. 17, 2023

Before we face that onrush, we first need to deal with the large volume of waste we’ve already produced.

From Scientific American Mar. 6, 2023

Last month, a pre-monsoon flash flood, triggered by an onrush of waters from upstream India’s northeastern states, hit Bangladesh’s northern and northeastern regions, destroying crops and damaging homes and road network vastly.

From Seattle Times Jun. 17, 2022

To try to compensate for the onrush of new users, Top Shot made lots of new Moments.

From The Verge Jun. 7, 2022

Only a winged creature could reach it, so steep and slimy were the rocks on all sides, and so fearful the onrush of the descending waters.

From "Mythology: Timeless Tales of Gods and Heroes" by Edith Hamilton

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