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avast

American  
[uh-vast, uh-vahst] / əˈvæst, əˈvɑst /

verb

Nautical.
  1. (used as a command to stop or cease).

    Avast heaving!


avast British  
/ əˈvɑːst /
  1. nautical stop! cease!

"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

Etymology

Origin of avast

1675–85; perhaps < Dutch houd vast hold fast ( see hold 1, fast 1)

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.

Gen Digital, 6.8 times earnings, is a mash-up of Avast and NortonLifeLock, players in home cybersecurity.

From Barron's • Apr. 10, 2026

In January 2020, PCMag reported that Avast Antivirus was surreptitiously collecting user data for Avast subsidiary Jumpshot, which repackaged and sold the data.

From Salon • Mar. 21, 2026

Avast does claim it protects from DNS leaks and adheres to a no-logging policy, which are features of sorts.

From Salon • Mar. 21, 2026

Whether physical or virtual, Avast provides a limited number of streaming-optimized servers, marked with a “monitor” icon in the server list.

From Salon • Mar. 21, 2026

"Avast there!" shouted Ellerton to Terence and Quexo, who were hauling on the shore.

From The Nameless Island A Story of some Modern Robinson Crusoes by Westerman, Percy F. (Percy Francis)

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