fourth

American  

[fawrth, fohrth] / fɔrθ, foʊrθ /

adjective

1. next after the third; being the ordinal number for four.

2. being one of four equal parts.

3. 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.

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noun

1. a fourth part, especially of one (¼).

2. the fourth member of a series.

3. Music.

   1. a tone on the fourth degree from a given tone (counted as the first).

   2. the interval between such tones.

   3. the harmonic combination of such tones.

4. Automotive. fourth gear.

   She downshifted from fifth to fourth as we started up the hill.

5. the Fourth. Independence Day; the Fourth of July.

adverb

1. in the fourth place; fourthly.

fourth British  

/ fɔːθ /

adjective

1. 1. coming after the third in order, position, time, etc. Often written: 4th

   2. ( as noun )

      the fourth in succession

2. denoting the fourth forward ratio of a gearbox in motor vehicles

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noun

1. music

   1. the interval between one note and another four notes away from it counting inclusively along the diatonic scale

   2. one of two notes constituting such an interval in relation to the other See also perfect interval diminished

2. the fourth forward ratio of a gearbox in a motor vehicle

   he changed into fourth as soon as he had passed me

3. a less common word for quarter

adverb

1. after the third person, position, event, etc

1. as the fourth point: linking what follows with the previous statements, as in a speech or argument

Etymology

Origin of fourth

First recorded before 950; Middle English fourthe, Old English fēowertha; see four, -th ²

Example Sentences

He is now guaranteed to finish at least fourth and goes into the final league phase night in Sheffield on 21 May equal on points with third-placed Price.

From BBC • May 14, 2026

The new book will be the fourth authorized by the family of Mario Puzo, the author of the original novel, since his death in 1999.

From Barron's • May 14, 2026

Gloo expects to turn its first profit by its fiscal fourth quarter, which ends in January, on an adjusted earnings before interest, taxes, depreciation and amortization basis.

From The Wall Street Journal • May 14, 2026

If Spielberg’s earlier UFO movies gave us awe, comfort and catastrophe, this one feels like an encounter of a fourth kind: What happens when the cover story breaks?

From Los Angeles Times • May 14, 2026

“There are four keys. You’ll never get the fourth one without us.”

From "The Way to Rio Luna" by Zoraida Cordova

Related Words

• one-fourth
• part
• portion
• term