English Reference

Word

cap

US/ˈkæp/

UK/kˈæp/

Definitions

01a hat

A2 · Elementary Countable noun

n. a soft, flat hat that fits closely to the head and usually has a stiff part at the front called a peak.

n. a close-fitting head covering, typically soft and brimless or featuring a peak, often worn for sport or casual use.

“He pulled his baseball cap down low to keep the sun out of his eyes.”

“The player adjusted his cap before stepping onto the field, ensuring the peak was perfectly aligned to block the stadium lights.”

Synonyms

hatheadwear

02a lid or cover

A2 · Elementary Countable noun

n. a small lid or cover used to close a bottle, tube, or pen.

n. a protective lid or seal designed to close the opening of a container or the tip of an object.

“Make sure you put the cap back on the pen so it doesn't dry out.”

“The technician tightened the plastic cap on the chemical vial to prevent any accidental leakage during transport.”

Synonyms

03an upper limit

B2 · Upper Intermediate Countable noun Finance

n. a maximum amount of money that can be spent or charged.

n. a legally or contractually mandated upper limit on a price, salary, or expenditure.

“The government introduced a cap on energy prices to help families with bills.”

“The league's salary cap prevents wealthier clubs from monopolising the best talent by restricting total player compensation.”

Antonyms

04a lie

C1 · Advanced Uncountable noun Slang · Informal

n. a lie or an exaggeration.

n. a statement that is untrue or exaggerated; frequently used in the phrase 'no cap' to mean 'I am not lying'.

“He said he met the president, but I think that's a cap.”

“The claim that he finished the entire project in a single afternoon was pure cap, as his colleagues had seen him struggling for weeks.”

Teaching tip

Commonly used by younger speakers; 'no cap' is a very frequent modern idiom used to emphasise sincerity.

Synonyms

Antonyms

05sports appearance

B2 · Upper Intermediate Countable noun Sports British English

n. an appearance for a national team in a sport like football or rugby.

n. an international appearance for a national sports team, originating from the physical cap formerly awarded to players.

“The striker earned his fiftieth cap for England in the match against France.”

“Despite his consistent performance at the club level, the midfielder struggled to secure a regular cap for the national squad.”

Synonyms

06to limit

B2 · Upper Intermediate Finance

v. to set a maximum limit on an amount of money.

v. to impose an upper limit on a variable, such as a price, interest rate, or budget.

“The council decided to cap rent increases at three percent per year.”

“The central bank may choose to cap interest rates if the volatility in the bond market continues to escalate.”

Antonyms

deregulateincrease

07to finish or outdo

B2 · Upper Intermediate

v. to finish something in a great way, or to do something even better than what came before.

v. to conclude an event or series of actions, often in a superlative way; to surpass a previous achievement.

“They capped the evening with a beautiful firework display over the lake.”

“The team capped a remarkable season by winning the championship trophy in front of their home crowd.”

Collocations

Common phrases and expressions where native English speakers use the word “cap” in context.

Verb

01. impose a cap

“The government decided to impose a cap on energy prices to help households.”

verb + noun

02. put on a cap

“He put on a cap before heading out into the cold morning air.”

verb + noun

03. wear a cap

“The baseball player always wears a cap to keep the sun out of his eyes.”

verb + noun

Adjective

04. baseball cap

“She bought a blue baseball cap with her favorite team's logo on it.”

adj + noun

05. tight cap

“I couldn't open the bottle because the plastic cap was too tight.”

adj + noun

Noun

06. bottle cap

“Make sure you screw the bottle cap on tightly so the juice doesn't spill.”

noun + noun

07. cap on spending

“The manager introduced a strict cap on spending for the new project.”

noun + prep + noun

08. shower cap

“She wore a plastic shower cap to keep her hair dry while bathing.”

noun + noun

09. cap mushrooms

Word family

NOUN

cap(B1)

Related words

Idioms

Domains

AnatomyArchitectureElectronicsFinanceMedicineNauticalSportsZoology

This entry

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
Common
Level
B1 · IntermediateOxford
Updated

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English Reference