fourth
Americanadjective
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next after the third; being the ordinal number for four.
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being one of four equal parts.
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Automotive. of, relating to, or operating at the gear transmission ratio at which the drive shaft speed is greater than that of third gear for a given engine crankshaft speed, but not so great as that of fifth gear, if such exists.
fourth gear.
noun
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fourths
plural
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a fourth part, especially of one (¼).
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the fourth member of a series.
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Music.
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a tone on the fourth degree from a given tone (counted as the first).
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the interval between such tones.
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the harmonic combination of such tones.
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Automotive. fourth gear.
She downshifted from fifth to fourth as we started up the hill.
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the Fourth. Independence Day; the Fourth of July.
adverb
adjective
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coming after the third in order, position, time, etc. Often written: 4th
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( as noun )
the fourth in succession
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denoting the fourth forward ratio of a gearbox in motor vehicles
noun
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music
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the interval between one note and another four notes away from it counting inclusively along the diatonic scale
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one of two notes constituting such an interval in relation to the other See also perfect interval diminished
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the fourth forward ratio of a gearbox in a motor vehicle
he changed into fourth as soon as he had passed me
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a less common word for quarter
adverb
Other Word Forms
Noun Inflected Forms
Etymology
Origin of fourth
First recorded before 950; Middle English fourthe, Old English fēowertha; see four, -th 2
Vocabulary lists containing fourth
Measurement and Data
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Spelling Practice 1, Unit 3
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Example Sentences
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See Examples For:
"Big frustration, big disappointment," said Jaissle after a fourth defeat in six Premier League games.
From BBC ● Nov. 2, 2026
Instead, major U.S. equity indexes like the S&P 500 are on track to tally a fourth straight year of double-digit returns.
From MarketWatch ● Nov. 2, 2026
For the current fourth quarter, the company expects to produce between 518,000 and 528,000 barrels of oil daily, with between 1,025,000 and 1,045,000 barrels oil equivalent a day.
From The Wall Street Journal ● Nov. 2, 2026
ESPN’s consensus was that the 2008 Lions would finish fourth in the division.
From Los Angeles Times ● Nov. 2, 2026
“This is the fourth time someone in 316 has gone for a hearing.”
From "The Hiding Place" by Corrie ten Boom
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Bolstering the blondies’ trick-or-treat bona fides was the fact that, after sharing them with co-workers, some dropped by asking for seconds, thirds and fourths.
From The Wall Street Journal ● Oct. 13, 2026
The Jack Berrys, the Bob Pauls, the Hunt brothers, the Lykes brothers, all of them with juniors or thirds or fourths.
From Slate ● Apr. 20, 2026
At meets, Mara racked up prize ribbons: lots of third-places, fourths, fifths, and sixths, the occasional second, the very rare first.
From Salon ● Aug. 3, 2024
"The amount of people with neuropathy in this study, particularly undiagnosed neuropathy, was extraordinarily high with almost three fourths of the study population," Elafros said.
From Science Daily ● May 8, 2024
It can vibrate in halves, with a node at the middle of the string as well as each end, or in thirds, fourths, and so on.
From "Understanding Basic Music Theory" by Catherine Schmidt-Jones and Russel Jones
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