four
Americannoun
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a cardinal number, three plus one.
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a symbol of this number, 4 or IV or IIII.
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a set of this many persons or things.
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a playing card, die face, or half of a domino face with four pips.
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Jazz. fours, alternate four-bar passages, as played in sequence by different soloists.
with guitar and piano trading fours.
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Automotive.
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an automobile powered by a four-cylinder engine.
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the engine itself.
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adjective
idioms
noun
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the cardinal number that is the sum of three and one
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a numeral, 4, IV, etc, representing this number
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something representing, represented by, or consisting of four units, such as a playing card with four symbols on it
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Also called: four o'clock. four hours after noon or midnight
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cricket
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a shot that crosses the boundary after hitting the ground
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the four runs scored for such a shot
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rowing
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a racing shell propelled by four oarsmen pulling one oar each, with or without a cox
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the crew of such a shell
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determiner
Etymology
Origin of four
before 1000; Middle English four, fower, Old English fēower; cognate with Old High German fior ( German vier ), Gothic fidwor; akin to Latin quattuor, Greek tésseres ( Attic téttares )
Vocabulary lists containing four
Spelling Practice 1, Unit 3
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Spelling Practice 1, Unit 5
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
While an object’s orbital path around the Sun can be found in a short number of years, any gravitational effects probably need four to five orbits to notice any subtle changes.
From Science Daily • Jun. 9, 2026
Every four years, soccer fans around the globe go berserk over the World Cup, but in host cities like Los Angeles, the worldwide spectacle feels bittersweet and financially out of reach.
From Los Angeles Times • Jun. 8, 2026
The home was for children aged four to 16 who were the subject of care orders and placed there for their own safety.
From BBC • Jun. 8, 2026
With a deal like SpaceX, being four or five times oversubscribed would likely be viewed viewed as a stronger sign of demand and could help support a sizable first-day pop.
From Barron's • Jun. 8, 2026
Early escaped Carville four times in his first two years.
From "At Last She Stood" by Erin Entrada Kelly
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.