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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.

That cost asymmetry — cheap offense, expensive defense — is what restructured the global counterdrone procurement map almost overnight.

From MarketWatch • Apr. 13, 2026

Since his return, OpenAI has expanded its presence in healthcare, retail, defense and other industries.

From Los Angeles Times • Apr. 13, 2026

But rather than reacting rashly, he marshaled a tenacious defense, not losing his composure or allowing himself to be tempted into a hotheaded action that could have led to disaster.

From Slate • Apr. 13, 2026

What counterdrone has become, structurally, is a layered defense technology problem with three distinct and investable tiers.

From MarketWatch • Apr. 13, 2026

Their main argument, in defense of subprime CDOs, was that “the CDO buyer will never go away.”

From "The Big Short" by Michael Lewis

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)

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!