twin

1.adjectiveA2

Definition

describes two things that are exactly alike or made to be used together as a matching set — for example, twin beds in a hotel room, twin sisters who dress the same way, or twin towers of equal height.

Example

Yan found a set of twin reading lamps at the weekend market.

collocation: twin + noun describing a matching product

The hotel room had twin beds with soft white pillows.

collocation: twin beds

Common collocations

twin beds
twin sister/brother
twin towers
twin peaks
twin engines

Synonyms

matching
focuses on visual similarity rather than being one of a pair
paired
stresses the idea of two items belonging together
identical
stronger — means exactly the same in every detail

Antonyms

single
not part of a pair
mismatched
does not match its partner

Grammar Patterns

twin + noun

Usage Note

Always placed immediately before the noun it describes — you cannot say 'a pair that is twin.'

Common Mistakes

They are twin.

They are twins.' or 'They are twin sisters.

as an adjective, 'twin' needs a noun after it.

2.adjectiveB2

Definition

describes two linked situations or objectives that coexist in a single period — for example, a government dealing with twin crises of drought and rising food prices.

Example

Layla faces the twin challenge of studying for exams while working part-time.

collocation: twin challenge / twin problem

The company set twin goals for next year: to cut food waste by half and to install solar panels.

collocation: twin goals

Common collocations

twin problems
twin goals
twin challenges
twin aims
twin crises

Synonyms

dual
more general; can describe any two-part nature
simultaneous
focuses on the timing aspect, not the paired relationship
parallel
suggests two things happening alongside each other

Grammar Patterns

twin + noun (abstract)

Usage Note

Only used with abstract nouns like 'problems,' 'goals,' 'crises,' 'aims' — not with concrete objects. Distinguish from MATCHING PAIR (adj/1), which describes physical objects that form a matching set.

1.nounA2

Definition

one of two babies who grow in the womb together and arrive on the same day — for example, a girl whose brother was delivered during the same birth.

Example

Padma and her fraternal twin both work as nurses at the same hospital.

pattern: [name] and [possessive] twin — specifying twin type

Maeve is a twin, but her sister came out two minutes earlier.

pattern: be a twin

Common collocations

identical twins
fraternal twins
twin brother
twin sister
have twins
give birth to twins

Synonyms

identical twin
specifically refers to twins who share the same DNA
fraternal twin
refers to twins who developed from separate eggs
sibling
broader — any brother or sister, not necessarily a twin

Antonyms

only child
a person with no siblings

Grammar Patterns

a twin

the twins

[possessive] twin

Usage Note

Often used in the plural form 'twins' to refer to the pair together. 'Identical twins' share the same genetic material; 'fraternal twins' develop from separate eggs and may look different.

Common Mistakes

She has a twin brother and sister.' (can you clarify: twin of both?)

She has a twin brother and a younger sister.

'twin' describes one sibling relationship, not two.

2.nounB1

Definition

one of two things that look almost the same or are so closely connected they form a pair — for example, a painting that is the twin of one in another museum.

Example

Ayesha found a blue vase at the market and its twin in an antique shop.

pattern: [noun] + twin / its twin

This statue is the exact twin of the one standing outside the museum in Rome.

pattern: the twin of [something]

Common collocations

the twin of
its twin
exact twin
perfect twin

Synonyms

duplicate
an exact copy, often made intentionally
match
something that goes well with another item
counterpart
slightly more formal; something that has a similar function or position

Antonyms

opposite
completely different in character or form

Grammar Patterns

the twin of [something]

a twin to [something]

Usage Note

Often used with a possessive or 'the ... of' structure. The twin item does not have to be physically identical — it just forms a natural pair with the other.

1.verbtransitiveB1

Definition

to bring two people or things together so that they form a matching set or work well in combination — for example, twinning a red wine with a cheese plate at dinner.

Example

Samir twinned his navy suit with a mustard-yellow tie for the awards dinner.

pattern: twin [noun] with [noun]

In the cooking class, each beginner was twinned with an experienced chef.

passive: be twinned with

Common collocations

twin with
be twinned with

Synonyms

pair
more common in everyday language
match
focuses on visual or functional compatibility
combine
broader — does not necessarily imply two items form a set

Antonyms

separate
to divide or keep apart

Grammar Patterns

twin [noun] with [noun]

be twinned with [noun]

Usage Note

Commonly used in the passive ('A is twinned with B'). Less common in everyday speech — 'pair', 'match', or 'combine' are more frequent alternatives.

Common Mistakes

She twinned her dress to her shoes.

She twinned her dress with her shoes.

the correct preposition is 'with', not 'to'.

2.verbtransitiveB2

Definition

to create a formal relationship between two towns or organizations, usually to encourage cultural exchange and visits between people from each place.

Example

The town of Lyme Regis is twinned with a village in Brittany, France.

passive: be twinned with [place]

The two schools were twinned so that students could exchange letters and visit each other.

Common collocations

twinned with
twin town
twin city
twinning agreement

Synonyms

sister
used in 'sister city' — the American English equivalent
partner
more general; used for formal relationships between organizations

Grammar Patterns

be twinned with [town/city]

Usage Note

Primarily a British English concept; the equivalent term in American English is 'sister city.' Almost always used in the passive form.

3.verbintransitiveB2

Definition

to give birth to two offspring at the same time — used mainly for animals such as goats, sheep, and cats that produce a pair of young in one pregnancy.

Example

The farmer's goat twinned last spring, producing two healthy kids.

pattern: [animal] twins (intransitive)

Maeve's cat has twinned twice in three years, with black and white kittens each time.

Synonyms

have twins
the standard phrase for humans
give birth to twins
more formal but very common

Grammar Patterns

[animal] twins

Usage Note

Very rare for humans in modern English — instead, say 'she had twins' or 'she gave birth to twins.' The verb form 'twin' for humans sounds old-fashioned or technical.

Common Mistakes

She twinned last week.' (referring to a human giving birth)

She had twins last week.

for humans, use 'have twins' or 'give birth to twins.'

Word family

twins
noun (plural)A2
twinning
nounB2
identical twin
nounB1
fraternal twin
nounB2

Synonym discussion

Sense: noun/2

All five words describe something that pairs with or resembles another item, but they differ in precision and context. 'Twin' (noun/2) implies a natural, often coincidental pair — two items that were not necessarily made together but happen to form a matching set, like two identical vases found in different shops. 'Duplicate' suggests an intentional copy made from an original, such as a duplicate key. 'Match' is broader and common in casual use — two socks can be a match even if they are not identical. 'Counterpart' is more formal and describes items with corresponding roles or positions, like a US president's counterpart in another country. 'Double' often carries a dramatic or uncanny tone, as in someone who looks exactly like another person. For everyday use, 'twin' and 'match' are the most natural choices for describing two things that belong together visually or functionally.

twin ↗duplicate ↗match ↗counterpart ↗double ↗

Common collocations

Nouns

twin beds
twin towers
twin sister
twin brother
twin engines
twin aims

Adverbs

closely twinned
perfectly twinned
often twinned

Phrases

the twin of
a pair of twins
identical twins
fraternal twins
twin town

Prepositions

twin with
twinned with

Etymology

Proto-GermanicOld EnglishMiddle EnglishEnglish

The word 'twin' traces back to Old English 'twinn,' meaning 'consisting of two' or 'double,' from the Proto-Germanic root '*twisnaz' (twofold). This root is related to the numeral 'two' and appears in other Germanic languages, such as Old Norse 'tvennr' and German 'Zwilling.' The core idea of 'twoness' has remained stable across more than a thousand years of English, with the noun sense ('one of a pair born together') recorded as early as the 13th century.

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twin

twin — adjective

1. describes two things that are exactly alike or made to be used together as a mat

Grammar Patterns

Usage Note

Common Mistakes

2. describes two linked situations or objectives that coexist in a single period —

Grammar Patterns

Usage Note

twin — noun

1. one of two babies who grow in the womb together and arrive on the same day — for

Grammar Patterns

Usage Note

Common Mistakes

2. one of two things that look almost the same or are so closely connected they for

Grammar Patterns

Usage Note

twin — verb

1. to bring two people or things together so that they form a matching set or work

Grammar Patterns

Usage Note

Common Mistakes

2. to create a formal relationship between two towns or organizations, usually to e

Grammar Patterns

Usage Note

3. to give birth to two offspring at the same time — used mainly for animals such a

Grammar Patterns

Usage Note

Common Mistakes

Word family

Synonym discussion

Common collocations

Nouns

Adverbs

Phrases

Prepositions

Etymology

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