Word
Definitions
01protection from attack
B1 · Intermediate Uncountable noun American English
n. the act of protecting someone or something from being hurt or damaged.
n. the action of defending or protecting from physical or metaphorical attack, danger, or injury.
“The city built a strong defense to protect the citizens from the rising floodwaters.”
“The castle's primary defense consisted of a deep moat and thick stone walls designed to withstand a prolonged siege.”
Usage
Often used with the preposition 'against'.
Synonyms
Antonyms
02military and government
B2 · Upper Intermediate Uncountable noun government American English
n. the way a country protects itself using its army, navy, and air force.
n. government policy, infrastructure, and personnel related to national security and the military.
“The government decided to increase spending on national defense this year.”
“The minister of defense argued that modernizing the air fleet was essential for maintaining regional stability.”
Teaching tip
In British English, this is spelled 'defence'.
Synonyms
03law
B2 · Upper Intermediate Countable noun Law American English
n. the lawyer or team of lawyers who represent the person accused of a crime.
n. the counsel and strategy used by the party being sued or accused in a legal proceeding.
“The defense argued that the man was at home during the time of the crime.”
“The defense rested its case after presenting three witnesses who contradicted the prosecution's timeline of events.”
Synonyms
Antonyms
04sports
B1 · Intermediate Countable noun Sports American English
n. the players on a team whose job is to stop the other team from scoring.
n. the players, or the collective strategy, tasked with preventing the opposing team from scoring points.
“Our team has a great defense, so the other side couldn't score any goals.”
“The coach emphasized that a solid defense is just as vital to winning the championship as a high-scoring offense.”
Synonyms
05justification
C1 · Advanced Countable noun American English · Formal
n. an argument or speech that supports an idea or person that is being criticized.
n. a spoken or written argument intended to justify or support a specific position or action.
“She wrote a long letter in defense of her friend's controversial decision.”
“The professor published a brilliant defense of classical literature, arguing for its continued relevance in the digital age.”
Synonyms
Antonyms
06to play defensively
C1 · Advanced Sports American English · Technical
v. to use a specific plan to stop an opponent from scoring in a game.
v. to employ defensive tactics or play in a defensive position during a sporting contest.
“The team struggled to defense the opponent's fast players in the second half.”
“The strategy was to defense the perimeter aggressively, forcing the shooters into difficult, contested attempts from long range.”
Usage
This verb use is primarily found in American sports jargon; 'defend' is the standard verb in most other contexts.
Collocations
Common phrases and expressions where native English speakers use the word “defense” in context.
Noun
01. defence system
“The country is investing in a new missile defence system to protect its borders.”
noun + noun
Etymology
From Middle English defens, defense, from Old French defens, defense, from Late Latin dēfēnsa (“protection”). Displaced native Old English bewering. The verb is from the noun.
From Middle English defencen, defensen, from Old French defenser or its etymon, Latin dēfēnsō.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Word family
NOUN
ADJECTIVE
Idioms
Domains
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B1 PreliminaryIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.4.0–5.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 3.0–3.544–71TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.550–784
- Frequency
- Very common
- Level
- B1 · Intermediate
- Updated
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QR code
englishreference.com/q/defense
「カタカナ語」 data: JMdict (EDRDG), CC BY-SA 4.0