eighty-four
HighNeutral
Definition
Meaning
The cardinal number equivalent to the product of eight and ten plus four; 84.
Used to denote quantity, position in a sequence, age, or as an identifier (e.g., in names, model numbers).
Linguistics
Semantic Notes
A compound numeral formed by combining the tens word 'eighty' and the units word 'four'. Functions primarily as a determiner, noun, or adjective.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or grammatical differences. Potential minor variation in stress patterns or linking in connected speech.
Connotations
None specific to either variety.
Frequency
Equally common in both dialects.
Vocabulary
Collocations
Grammar
Valency Patterns
[NUM] + [NOUN] (eighty-four people)the + [ORDINAL] (the eighty-fourth)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “eighty-four skidoo (obsolete/nonsense phrase)”
- “the eighty-four steps (title allusion)”
Usage
Context Usage
Business
Used in reports, statistics, pricing, and model numbers (e.g., 'The project will take eighty-four days.').
Academic
Used in mathematics, historical dates, statistical data, and referencing (e.g., 'See page eighty-four.').
Everyday
Used for age, quantities, scores, and house/room numbers (e.g., 'My grandmother is eighty-four.').
Technical
Used as a code, version number, or measurement (e.g., 'Error code 84.', 'Channel 84.').
Examples
By Part of Speech
verb
British English
- (Not typically used as a verb)
American English
- (Not typically used as a verb)
adverb
British English
- (Not typically used as an adverb)
American English
- (Not typically used as an adverb)
adjective
British English
- She bought eighty-four candles for the celebration.
- The eighty-fourth contestant won the prize.
American English
- He needed eighty-four dollars for the repair.
- She finished in eighty-fourth place.
Examples
By CEFR Level
- I am eighty-four years old.
- My house number is eighty-four.
- The book has eighty-four pages.
- Eighty-four people attended the meeting.
- The temperature reached eighty-four degrees Fahrenheit yesterday.
- Approximately eighty-four percent of participants agreed.
- The treaty of 1784, signed two hundred and forty years ago, is cited on page eighty-four of the document.
- The algorithm's efficiency decreased by a factor of eighty-four under peak load.
Learning
Memory Aids
Mnemonic
Think of 'Ate Tea (80) for (4) breakfast' -> Eighty-Four.
Conceptual Metaphor
QUANTITY IS VERTICALITY (eighty-four is 'up there' in number), AGE IS A JOURNEY (eighty-four years into the journey of life).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct word-for-word translation 'восемьдесят-четыре' as a single hyphenated word; it's two separate words in English.
- Remember the '-ty' ending for tens (eighty) is distinct from the '-teen' ending for teens.
Common Mistakes
- Writing 'eighty four' without a hyphen when used as a compound adjective before a noun (e.g., 'an eighty-four-year-old man').
- Mispronouncing 'eighty' as 'eight-teen'.
- Incorrect ordinal form: 'eighty-four-th' instead of 'eighty-fourth'.
Practice
Quiz
Which is the correct ordinal form of 'eighty-four'?
FAQ
Frequently Asked Questions
Yes, when used as a compound adjective before a noun (eighty-four-page document). It is often written without a hyphen when used as a noun (I counted eighty four). Style guides vary, but hyphenation in adjectival use is standard.
In British English, it's a clear /t/. In American English, it is often pronounced as a flap [ɾ], sounding similar to a quick 'd', especially between vowels in connected speech.
No, 'eighty-four' is a numeral and cannot be used as a verb. It functions as a determiner, noun, or adjective.
A common mistake is misforming the ordinal number, saying 'eighty-four-th' instead of the correct 'eighty-fourth'. Another is forgetting the hyphen in compound adjectives like 'an eighty-four-year gap'.