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Definitions

defense

[dih-fens, dee-fens] / dɪˈfɛns, ˈdi fɛns /
NOUN
armament; protection system
Synonyms
STRONG
aegis armor arms barricade bastille bastion bulwark buttress citadel cover deterrence dike embankment fastness fence fort fortification fortress garrison guard hard shell immunity munitions palisade parapet position protection rampart redoubt resistance safeguard security shelter shield stockade stronghold trench wall ward warfare weaponry weapons
Antonyms
STRONG
harm hurt injury
WEAK
betrayal capitulation desertion flight surrender yielding
NOUN
explanation, justification
Synonyms
STRONG
answer apologetics apologia apology argument cleanup cop-out exculpation excuse exoneration extenuation jive plea rationalization rejoinder reply response retort return story vindication whitewash
WEAK
apologizing excusing explaining fish story off-time song and dance
Antonyms
STRONG
charge indictment question request
WEAK
betrayal capitulation desertion flight surrender yielding

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.

A few hours later, Iran launched another attack, according to the U.A.E.’s ministry of defense.

From The Wall Street Journal • May 6, 2026

Army is pushing defense contractors to provide access to weapons’ software to improve their interoperability and help integrate them with emerging artificial-intelligence tools.

From The Wall Street Journal • May 5, 2026

Monday evening, the maker of defense and commercial nuclear technologies reported External link earnings per share of $1.12 from sales of $860.2. million.

From Barron's • May 4, 2026

To investigate further, the researchers focused on a widely used material found in sensors, actuators, and defense systems, a lead magnesium niobate-lead titanate alloy.

From Science Daily • May 4, 2026

Gentle or not, the move startled C.C., who pulled away in defense.

From "The Very, Very Far North" by Dan Bar-el

Vocabulary lists containing defense

Set, Hut! Football Vocabulary

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Defense, Dribble, and Dunk: Basketball Lingo

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Preamble to the U.S. Constitution (1787)

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