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overkill

American  
[oh-ver-kil] / ˈoʊ vərˌkɪl /

noun

  1. the capacity of a nation to destroy, by nuclear weapons, more of an enemy than would be necessary for a military victory.

  2. an instance of such destruction.

  3. an excess of what is required or suitable, as because of zeal or misjudgment.


overkill British  
/ ˈəʊvəˌkɪl /

noun

  1. the capability to deploy more weapons, esp nuclear weapons, than is necessary to ensure military advantage

  2. any capacity or treatment that is greater than that required or appropriate

"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 overkill

An Americanism dating back to 1945–50; over- + kill 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.

This may be overkill, but if you have millions of dollars, a “dynasty trust” allows you to control assets over multiple generations.

From MarketWatch • Jun. 23, 2026

Expensive GPU-filled servers were overkill, and data-center customers mostly bought CPU servers to run websites, databases, applications, and other traditional workloads.

From Barron's • May 8, 2026

It feels a bit like overkill if you’re just a little sleepy.

From Slate • Nov. 26, 2025

The comedic overkill of the insult is on purpose.

From Los Angeles Times • Nov. 25, 2025

But regardless of whether the overkill hypothesis or the climate hypothesis proves correct, the disappearance of all of the big animals of Australia/New Guinea had, as we shall see, heavy consequences for subsequent human history.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

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