num
forty
FAW-tee
num
1
The number after thirty-nine and before forty-one; 40.
"She turned forty last week."
noun
1
A large bottle of beer holding forty fluid ounces.
"He picked up a forty from the corner store."
How to Use Forty
Learner’s notesIn plain EnglishThe number 40 — or, in slang, a large 40-ounce bottle of beer.
Common pairings
forty years
turn forty
forty winks
Word Forms
more forty comparative, forties plural, most forty superlative
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Etymology
From Old English feowertig, from Proto-Germanic roots meaning "four tens" — the same pattern as "fifty" and "sixty."