Forty

//ˈfɔːti// adj, noun, num, slang

adj, noun, num, slang ·Common ·High school level

Definitions

Noun
  1. 1
    A bottle (of beer) containing forty fluid ounces. US, slang

    "It's on, wrap my lips around the forty / And when it comes to getting another stogie […] Grab your forty, let's get keyed"

  2. 2
    the cardinal number that is the product of ten and four wordnet
Adjective
  1. 1
    Resembling or characteristic of a fort.
Adjective
  1. 1
    being ten more than thirty wordnet
Numeral
  1. 1
    The cardinal number occurring after thirty-nine and before forty-one, represented in Roman numerals as XL and in Arabic numerals as 40.

    "'Tis forty years this very day, Since you and I, old girl, were married."

Synonyms

All synonyms
4040blockboxcarsclosecroft

Example

More examples

"We have enjoyed peace for more than forty years."

Etymology

Etymology 1

From Middle English fourti, feortiȝ, from Old English fēowertiġ, ultimately from Proto-Germanic *fedwōr tigiwiz (“forty”). By surface analysis, four + -ty.

Etymology 2

From fort + -y.

Related phrases

Forty MileForty Thievesback fortyforty minutes of hellforty weepy weepyforty winksforty-eighterforty-foot equivalent unitforty-levenforty-rodforty-second cousinforty-something

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.