Fifth definition

fĭfth, fĭth
The ordinal number matching the number five in a series.
noun
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One of five equal parts.
noun
6
1
Preceded by four others in a series; 5th.
adjective
4
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Designating any of the five equal parts of something.
adjective
3
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The one following the fourth.
noun
3
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The fifth gear of an engine.
noun
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A quantity of liquor equal to one-fifth of a gallon, or, more commonly, 750 milliliters.
noun
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The musical interval between one note and another five tones higher.
noun
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The fifth voice in a polyphonic melody.
noun
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(chiefly US, informal, with the) The Fifth Amendment.
pronoun
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(chiefly US, informal, with the, by extension) The right not to give self-incriminating testimony.
pronoun
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(chiefly US) Fifth Avenue.
pronoun
0
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(chiefly US) Fifth Street.
pronoun
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One fifth of a gallon or four fifths of a quart of liquor.
noun
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1
The Fifth Amendment. Used with the.
noun
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1
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A tone five degrees above or below a given tone in a diatonic scale.
noun
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The harmonic combination of two such tones.
noun
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1
The dominant of a scale or key.
noun
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1
Any of the five equal parts of something;15
noun
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1
noun
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A unit of liquid measure for alcoholic beverages, equal to a fifth of a gallon (0.757 liter)
noun
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1
A bottle of alcohol with a capacity of one fifth of a gallon.
noun
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1
The fifth tone of an ascending diatonic scale, or a tone four degrees above or below any given tone in such a scale; dominant.
noun
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1
The interval between two such tones, or a combination of them.
noun
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1
In the fifth place, rank, group, etc.
adverb
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1
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The ordinal form of the number five.
adjective
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1
The person or thing in the fifth position.
noun
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1
One of five equal parts of a whole.
noun
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1
The interval between two such tones.
noun
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2
plead the Fifth
  • to invoke the Fifth Amendment in refusing to testify against oneself
idiom
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Other Word Forms

Noun

Singular:
fifth
Plural:
fifths

Idioms and Phrasal Verbs

Origin of fifth

  • Middle English from Old English fīfta penkwe in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle English fifthe, fifte, fift, from Old English fīfta (“fifth”), from Proto-Germanic *femftô (“fifth”), equivalent to five +‎ -th. Cognate with Scots fift, fyft (“fifth”), North Frisian fyfde (“fifth”), West Frisian fyfde (“fifth”), Dutch vijfde (“fifth”), Low German fifte, föfte, füfte (“fifth”), German fünfte (“fifth”), Danish femte (“fifth”), Swedish femte (“fifth”), Icelandic fimmta (“fifth”).

    From Wiktionary

  • From the name of the Fifth Amendment to the United States Constitution, protecting various rights in United States legal proceedings.

    From Wiktionary