ninety-one
A2Neutral
Definition
Meaning
The natural number following ninety and preceding ninety-two; 91.
A term used to denote the number 91, often used in contexts of counting, statistics, ages, scores, or sequential identifiers.
Linguistics
Semantic Notes
A compound numeral. The meaning is purely numerical. It is typically hyphenated when used attributively (e.g., ninety-one pages) but may not be in certain style guides or when used nominally.
Dialectal Variation
British vs American Usage
Differences
No semantic differences. UK English may be more likely to use 'and' after 'ninety' in spoken forms (e.g., ninety-one vs. ninety-and-one), though the latter is archaic/regional. No difference in written form.
Connotations
None.
Frequency
Equal frequency in both varieties.
Vocabulary
Collocations
Grammar
Valency Patterns
as a cardinal number (There are ninety-one)modified by a noun (ninety-one things)in sequences (from ninety-one to one hundred)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Dressed up to the nines (unrelated, but a potential confusion point due to 'nine')”
Usage
Context Usage
Business
Used in reports, e.g., 'Profits rose ninety-one percent.'
Academic
Used in statistics, data, and numbering, e.g., 'See page ninety-one for the methodology.'
Everyday
Used for age, temperature, quantities, e.g., 'My grandmother is ninety-one.'
Technical
Used as an identifier or code, e.g., 'Error code ninety-one.'
Examples
By Part of Speech
verb
British English
- The team managed to ninety-one their opponents in the final overs. (rare, sports slang for score 91)
American English
- He ninety-oned his way through the level. (rare, gaming slang for achieving a score of 91)
adjective
British English
- She received a ninety-one-page report for review.
American English
- The ninety-one-story skyscraper dominated the skyline.
Examples
By CEFR Level
- I have ninety-one stickers in my collection.
- My flat is number ninety-one.
- The temperature reached ninety-one degrees Fahrenheit today.
- Approximately ninety-one percent of participants agreed.
- The legislation passed with a narrow margin of ninety-one votes to eighty-nine.
- He cited the precedent established in Section Ninety-One of the Act.
- The poet's prolific output continued unabated well into her ninety-first year.
- The dataset was filtered to exclude the ninety-first percentile and above.
Learning
Memory Aids
Mnemonic
Think of it as 'nine-ty' (nine tens, or 90) plus 'one' more. It's simply 90 + 1.
Conceptual Metaphor
QUANTITY IS VERTICALITY (a high number), SEQUENCE IS A PATH (a point on the journey to one hundred).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Direct translation is "девяносто один". The main trap is the construction of the word 'ninety' itself, which is not a direct cognate. Ensure correct word order (ninety-one, not one-ninety).
Common Mistakes
- Writing as 'ninty-one' (misspelling 'ninety'), '91-one' (redundant), or omitting the hyphen in attributive position (e.g., 'ninetyone pages').
Practice
Quiz
Which of the following is the standard written form of the number 91?
FAQ
Frequently Asked Questions
It is typically hyphenated when used as a compound adjective before a noun (e.g., ninety-one days). When used as a simple numeral, styles vary, but hyphenation is common.
In American English, the 't' in 'ninety' often becomes a 'flap t' [ɾ], sounding similar to a quick 'd', so it's pronounced like 'nine-di' [ˈnaɪn.t̬i].
The ordinal form is 'ninety-first' (91st).
Yes, it can function as a noun phrase, e.g., 'Ninety-one is a prime number.'