forty
2 synonyms and 0 antonyms for forty, grouped by meaning and by how common each one is.
Num — The number after thirty-nine and before forty-one; 40.
Synonyms
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
How to use forty
The word patterns that sound natural to a native speaker.
Etymology
From Old English feowertig, from Proto-Germanic roots meaning "four tens" — the same pattern as "fifty" and "sixty."
Full origin of forty →Frequently asked questions
What does “forty” mean?
The word “forty” means the number after thirty-nine and before forty-one; 40. In plain terms, the number 40 — or, in slang, a large 40-ounce bottle of beer.
How do you pronounce “forty”?
“Forty” is pronounced FAW-tee (/ˈfɔɹti/ in IPA).
How do you use “forty” in a sentence?
Here is “forty” used in a sentence: “She turned forty last week.”
What part of speech is “forty”?
Depending on how it is used, “forty” can be a num and a noun.
Where does the word “forty” come from?
The word “forty” comes from Old English. From Old English feowertig, from Proto-Germanic roots meaning "four tens" — the same pattern as "fifty" and "sixty.".
Is “forty” a common word?
“Forty” is a fairly common word in modern English, usually learned at around the A1 level.
How many meanings does “forty” have?
“Forty” has 2 distinct senses listed in this dictionary. The most common is: the number after thirty-nine and before forty-one; 40.
How do you spell forty — is it "forty" or "fourty"?
The correct spelling is "forty," with no "u," even though the number "four" contains one. "Fourty" is a common misspelling and is not accepted in standard English.
What is the difference between "forty" and "fortieth"?
"Forty" is the cardinal number 40, used for counting, as in forty people. "Fortieth" is the ordinal form, used to show position or order in a sequence, as in her fortieth birthday.
When should you write "forty" as a word rather than "40" as a figure?
In formal prose, numbers are often spelled out, so "forty" is common in narrative writing. Figures like 40 are preferred in technical, statistical, or informal contexts, and consistency within a single document matters most.