ninety
A1neutral
Definition
Meaning
The number equivalent to the product of nine and ten; 90.
Referring to an approximate quantity or age (e.g., in the nineties). Also used in naming decades (e.g., the 1990s).
Linguistics
Semantic Notes
A cardinal number. Can be used literally or as an approximation. When pluralised ('nineties'), it refers to the range 90-99, a decade (e.g., 1990s), or a temperature range.
Dialectal Variation
British vs American Usage
Differences
Pronunciation of the /t/ in 'ninety' may be more aspirated or flapped depending on dialect. The numeral form and usage are identical.
Connotations
Identical connotations in both varieties.
Frequency
Identical high frequency in both varieties.
Vocabulary
Collocations
Grammar
Valency Patterns
number + ninety (e.g., one hundred and ninety)ninety + noun (e.g., ninety people)in + one's + nineties (for age)the + nineties (for decade/temperature)Vocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “the ninety-nine percent (the general populace)”
- “ninety-nine times out of a hundred (almost always)”
- “ninety to nothing (at great speed)”
Usage
Context Usage
Business
Used in financial reports, percentages, and projections (e.g., 'Ninety percent of revenue comes from exports').
Academic
Used in statistics, historical periods (e.g., 'the 1890s'), and scientific measurements.
Everyday
Used for age, quantity, price, time, and decades (e.g., 'She's in her nineties', 'It's ninety pence').
Technical
Used as a precise numerical value in mathematics, engineering, and computing.
Examples
By Part of Speech
adjective
British English
- A ninety-day warranty is standard.
- He is a ninety-year-old veteran.
American English
- A ninety-day warranty is standard.
- He is a ninety-year-old veteran.
Examples
By CEFR Level
- My grandmother is ninety years old.
- The bus ride takes about ninety minutes.
- Turn to page ninety.
- Nearly ninety percent of the students passed the exam.
- Temperatures are expected to reach the nineties this weekend.
- The book costs ninety euros.
- The economic policies of the nineties led to significant growth.
- He inherited a collection of ninety-first editions.
- The survey had a ninety-five percent confidence interval.
- The nonagenarian, having lived through the roaring nineties of the 19th century, had tales of profound change.
- The resolution was passed by a ninety-vote majority.
Learning
Memory Aids
Mnemonic
Think of 'NINE' with a 'TY' at the end, like 'twenty', 'thirty', etc. It's nine tens.
Conceptual Metaphor
QUANTITY IS VERTICALITY (e.g., 'prices in the nineties'), TIME IS A LANDSCAPE (e.g., 'back in the nineties').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with Russian 'девяносто' (devyanosto) – the stress and syllable structure are different. The English 't' sound is clear.
- In dates like '1991', it is read as 'nineteen ninety-one', not a direct translation of the Russian pattern.
Common Mistakes
- Mispronunciation as /ˈnaɪn.tiː/ (with a long final vowel).
- Spelling error: 'ninty'.
- Incorrectly using 'ninety' without the 'and' in British English numbers (e.g., 'one hundred ninety' is AmE, 'one hundred and ninety' is BrE).
Practice
Quiz
In British English, how is the number 190 typically spoken?
FAQ
Frequently Asked Questions
The correct spelling is 'ninety'. A common misspelling is 'ninty'.
'Ninety' is the number 90. 'Nineties' (plural) refers to the range 90-99, a decade (e.g., 1990s), or a temperature range.
Both are correct, but 'one hundred and ninety' is preferred in British English, while 'one hundred ninety' is common in American English.
In British English: /ˈnaɪn.ti/. In American English: /ˈnaɪn.t̬i/, where the 't' sounds more like a soft 'd'.