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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.

But the Islamic Revolutionary Guard Corps claimed that a new type of Iranian air defense system deployed for the first time in recent days had shot down a warplane on Friday.

From Los Angeles Times • Apr. 3, 2026

Ma Xingrui, a former top official in Xinjiang, is the latest aerospace-sector veteran targeted in probes rocking China’s defense industry.

From The Wall Street Journal • Apr. 3, 2026

That is a tailwind for defense stocks, although investors have to believe it will happen.

From Barron's • Apr. 3, 2026

For 2027, President Donald Trump is asking for a record military defense budget of $1.5 trillion as part of the White House’s proposed budget plan.

From Salon • Apr. 3, 2026

In my defense, he tossed around the story of that unfortunate field trip where I wet my pants like it was confetti, so he had it coming.

From "Glitch" by Laura Martin

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.