Is 'twenty-seven' hyphenated?

Yes, when used as a compound adjective before a noun (e.g., 'a twenty-seven-year-old'). It is not hyphenated when used as a simple number (e.g., 'the number twenty seven').

What is the ordinal form of 'twenty-seven'?

The ordinal form is 'twenty-seventh' (27th).

How do you pronounce the 't' in 'twenty'?

In careful speech, /t/ is pronounced. In rapid, informal American speech, it is often softened or dropped, sounding like 'twenny' /ˈtwɛni/.

Is 'and' used when saying 'twenty-seven' in British English?

Traditionally, yes ('twenty and seven'), but the form without 'and' is also very common and acceptable, especially in American English.

twenty-seven

High

UK/ˌtwɛnti ˈsɛv(ə)n/US/ˌtwɛnti ˈsɛv(ə)n/ | /ˌtwɛni ˈsɛv(ə)n/ (informal)

Neutral

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Definition

Meaning

The cardinal number equivalent to the sum of twenty and seven; 27.

A numeric identifier used for counting, ordering, or labeling; often associated with age, quantities, or positions in sequences.

Linguistics

Semantic Notes

As a compound numeral, it follows the regular pattern for numbers 21-99 in English: tens digit + 'and' (optional in American English) + units digit. Functions primarily as a determiner, noun, or adjective.

Dialectal Variation

British vs American Usage

Differences

In British English, 'twenty-seven' is often spoken with an 'and' between tens and units ('twenty and seven'), especially in formal contexts. American English typically omits the 'and' in spoken numbers above twenty, though it's not incorrect.

Connotations

Neutral in both dialects; no significant connotative difference.

Frequency

Equally common in both dialects. The written form is identical.

Vocabulary

Collocations

strong

years oldyears of agechapter twenty-sevenpage twenty-sevennumber twenty-seven

medium

twenty-seven peopletwenty-seven pointstwenty-seven daystwenty-seven percent

weak

twenty-seven reasonstwenty-seven milestwenty-seven attemptsaround twenty-seven

Grammar

Valency Patterns

[Determiner] + twenty-seven + [plural noun][Subject] + is/are + twenty-seven + [years old][Position] + number twenty-seven

Vocabulary

Synonyms

Neutral

27seven and twenty (archaic/poetic)

Weak

mid-to-late twentiesa score and seven (archaic)

Vocabulary

Antonyms

zeronone

Phrases

Idioms & Phrases

“Dressed up to the nines (sometimes humorously extended to '...and twenty-seven')”
“On cloud twenty-seven (humorous variation of 'on cloud nine')”

Usage

Context Usage

Business

Used in reports, statistics, or financial data (e.g., 'twenty-seven new clients').

Academic

Used in referencing (page, chapter), data, or statistical analysis.

Everyday

Most common for stating age, quantities, or numbers in sequences (e.g., house number, bus route).

Technical

Used in mathematics, coding, or any field requiring numeric identifiers.

Examples

By Part of Speech

noun

British English

Twenty-seven is considered a lucky number by some.
She's just turned twenty-seven.

American English

He wore number twenty-seven on his jersey.
The answer is twenty-seven.

adjective

British English

The twenty-seven participants were all given a handbook.
He's in his twenty-seventh year.

American English

We need twenty-seven copies by tomorrow.
She celebrated her twenty-seventh birthday.

determiner

British English

Twenty-seven trees were planted in the park.
I have twenty-seven pounds left.

American English

Twenty-seven states ratified the amendment.
It took twenty-seven minutes.

Examples

By CEFR Level

I am twenty-seven years old.
There are twenty-seven students in my class.

The project will take approximately twenty-seven days to complete.
Chapter twenty-seven is the most exciting part of the book.

Despite being only twenty-seven, she had already published two acclaimed novels.
The resolution was passed with a majority of twenty-seven votes.

The algorithm iterated through all twenty-seven possible permutations before arriving at the optimal solution.
His research surveyed twenty-seven distinct demographic cohorts across three continents.

Learning

Memory Aids

Mnemonic

Think of a 'TWENTy' note ($20) plus a 'SEVEN' dollar coin. You have twenty-seven dollars total.

Conceptual Metaphor

QUANTITY IS VERTICAL POSITION/MASS (e.g., 'The number climbed to twenty-seven'); TIME IS A LANDSCAPE TRAVERSED (e.g., 'She reached twenty-seven years').

Watch out

Common Pitfalls

Translation Traps (for Russian speakers)

Direct word-for-word translation ('двадцать семь') is correct. No significant trap, but note the hyphen in the English compound adjective form ('a twenty-seven-year-old woman').

Common Mistakes

Writing as '27th' when meaning the cardinal number (should be 'twenty-seventh' for ordinal).
Incorrect hyphenation: 'twenty seven' (should be hyphenated when used as a compound adjective before a noun: 'a twenty-seven-page document').

Practice

Quiz

Fill in the gap

After the merger, the company now operates in countries worldwide. (twenty-seven)

Multiple Choice

Which sentence uses 'twenty-seven' correctly as a compound adjective?

FAQ

Frequently Asked Questions

: Yes, when used as a compound adjective before a noun (e.g., 'a twenty-seven-year-old'). It is not hyphenated when used as a simple number (e.g., 'the number twenty seven').
: The ordinal form is 'twenty-seventh' (27th).
: In careful speech, /t/ is pronounced. In rapid, informal American speech, it is often softened or dropped, sounding like 'twenny' /ˈtwɛni/.
: Traditionally, yes ('twenty and seven'), but the form without 'and' is also very common and acceptable, especially in American English.