English Reference

Word

rubber

Phoneticsrub·ber, stress on the first syllable

US/ˈɹəbɝ/

UK/ɹˈʌbɐ/

Definitions

01elastic material

A2 · Elementary Uncountable noun Science

n. a strong, flexible material made from the sap of a tree or from chemicals.

n. a tough, elastic, polymeric substance made from the latex of tropical plants or produced synthetically.

“The soles of these hiking boots are made of thick, durable rubber.”

“Modern industrial manufacturing relies heavily on synthetic rubber for the production of seals, gaskets, and heavy-duty vehicle tyres.”

Synonyms

latexelastomer

02pencil eraser

A2 · Elementary Countable noun British English

n. a small piece of rubber or plastic used to remove pencil marks from paper.

n. an implement, typically made of rubber or vinyl, used for removing markings made by a pencil.

“I made a mistake in my drawing, so I used a rubber to fix it.”

“The student reached into her pencil case for a rubber to clean up the stray graphite marks on her technical diagram.”

Teaching tip

In American English, this is almost exclusively called an 'eraser'. Using 'rubber' in the US for this object may cause confusion or amusement due to its slang meaning.

Synonyms

03condom

B2 · Upper Intermediate Countable noun Medicine American English · Slang · Informal

n. a thin rubber covering worn during sex to prevent pregnancy or disease.

n. a sheath, typically made of latex, used as a contraceptive and a barrier against sexually transmitted infections.

“The health clinic provides free rubbers and advice on safe sex.”

“Public health campaigns in the 1990s frequently used informal terms like 'rubbers' to make discussions about safe sex more accessible to teenagers.”

04series of games

C1 · Advanced Countable noun Sports British English · Formal

n. a series of games, especially in bridge or cricket, where the winner is the one who wins the most matches.

n. a contest consisting of a series of matches, typically the best of three or five, between two sides.

“The two teams are tied, so the final rubber will decide the tournament winner.”

“After winning the first two matches convincingly, the visiting team secured the rubber with one game still left to play.”

Synonyms

05car tyres

C1 · Advanced Uncountable noun Sports Slang

n. the tyres on a vehicle, especially in racing.

n. the tyres of a motor vehicle, particularly in the context of automotive racing and tyre performance.

“The driver went into the pits to get some fresh rubber for the final laps.”

“The pit crew worked frantically to change the rubber, as the driver complained of losing grip on the overheating asphalt.”

Synonyms

06bounced check

C2 · Proficiency Slang

adj. used to describe a bank check that cannot be paid because there is no money in the account.

adj. referring to a cheque that is returned by a bank due to insufficient funds.

“He tried to pay with a rubber check, but the shop owner refused it.”

“The landlord became suspicious after receiving a rubber cheque for the third month in a row.”

Synonyms

Antonyms

Collocations

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

Verb

01. erase the mistake with a rubber

“He quickly erased the mistake with a rubber before handing in his drawing.”

verb + noun + prep + noun

Adjective

02. synthetic rubber

“Most modern car tires are made from a blend of natural and synthetic rubber.”

adj + noun

03. vulcanized rubber

“The invention of vulcanized rubber made the material much more durable and heat-resistant.”

adj + noun

Noun

04. rubber band

“She used a thick rubber band to keep all the loose documents together.”

noun + noun

05. rubber gloves

“You should wear rubber gloves when using these harsh cleaning chemicals.”

noun + noun

06. rubber sole

“These boots have a thick rubber sole that provides excellent grip on wet surfaces.”

noun + noun

07. smell of burning rubber

“The smell of burning rubber filled the air after the driver slammed on the brakes.”

noun + of + adj + noun

Real-World Examples

“Examples of electrical wire covered with vulcanised Indian rubber cabling were found.”
BBC News 13 Sept 2026
“He took a job working at the University of Malaya on ferns and rubber trees and to get there travelled for some months through India and Sri Lanka.”
The Guardian 5 Feb 2012

Etymology

From rub + -er. The sense of the substance comes from its ability to function as an eraser, displacing earlier caoutchouc. The senses not pertaining to rubbing or erasing are secondarily derived from the name of the substance.

Unknown.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

NOUN

rubber(B2)

ADJECTIVE

Idioms

Domain

Sports

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.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL 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: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Common
Level
B2 · Upper IntermediateOxford
Updated

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