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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.

The defense company reported $26.6 billion in orders for the quarter, with a total estimated contract value of $188.4 billion.

From The Wall Street Journal • Apr. 29, 2026

High-profile defense attorney Alan Jackson dropped out of the case earlier this year, and has yet to publicly explain why.

From Los Angeles Times • Apr. 29, 2026

The quarter provided relief for the defense sector, which saw competitors’ shares fall 5% to 7% after recent earnings.

From Barron's • Apr. 29, 2026

“Affording social safety nets, affording national defense – you’ve got to be a little more competitive,” Dimon said.

From MarketWatch • Apr. 29, 2026

The country simply had not taken civil defense very seriously.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin

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!