annihilate

verb

an·​ni·​hi·​late ə-ˈnī-ə-ˌlāt How to pronounce annihilate (audio)
annihilated; annihilating
Synonyms of annihilatenext

transitive verb

1
a
: to cause to cease to exist : to do away with entirely so that nothing remains
b
: to destroy a considerable part of
Bombs annihilated the city.
The enemy troops were annihilated.
c
: to defeat overwhelmingly : rout
annihilated the visitors 56–0
2
a
: to cause to be of no effect : nullify
a right to freedom that cannot be annihilated
b
: to destroy the substance or force of
Fear can annihilate one's confidence.
3
: to regard as of no consequence
4
: to cause (something, such as a particle and its antiparticle) to vanish or cease to exist by coming together and changing into other forms of energy (such as photons)
matter and antimatter annihilate each other

intransitive verb

of a particle and its antiparticle : to vanish or cease to exist by coming together and changing into other forms of energy (such as photons)
annihilatory adjective

Examples of annihilate in a Sentence

The enemy troops were annihilated. He annihilated his opponent in the last election.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
If Neptune did have an original set of moons that more closely resembled those of its planetary neighbors, the arrival of Triton — which is just smaller than our own moon — would have wreaked havoc, crashing into the other satellites and annihilating some of them. Jacopo Prisco, CNN Money, 20 May 2026 Now southern Republicans are annihilating Black political power. Adam Serwer, The Atlantic, 19 May 2026 Instead, it is filled with a froth of virtual particles becoming real in pairs, waving to us, annihilating each other, and sinking back into the soup of virtual particles. Stephen Clark, ArsTechnica, 15 May 2026 Unfortunately, any of the giant armada of smaller objects tens of meters wide is still large enough to annihilate Beijing, Lagos, or New York – objects such as the one that exploded over Chelyabinsk, Russia in 2013 – and those are far harder to detect. New Atlas, 10 May 2026 See All Example Sentences for annihilate

Word History

Etymology

Late Latin annihilatus, past participle of annihilare to reduce to nothing, from Latin ad- + nihil nothing — more at nil

First Known Use

1525, in the meaning defined at transitive sense 2a

Time Traveler
The first known use of annihilate was in 1525

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Cite this Entry

“Annihilate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/annihilate. Accessed 31 May. 2026.

Kids Definition

annihilate

verb
an·​ni·​hi·​late ə-ˈnī-ə-ˌlāt How to pronounce annihilate (audio)
annihilated; annihilating
: to destroy completely
annihilation noun
annihilator noun

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