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fifth

fifth

30 1.0
One of five equal parts of something
  • noun
  • /fɪfθ/
translation icon : quinto
  • If you divide the cake into five equal pieces, each piece is a fifth of the whole.
  • one-fifth
  • four-fifths
  • three-fifths

This plan would only undo a fifth of those cuts.

Examples

  • Only a fifth of a second off.

  • Social studies constitute but one strand, less than a fifth, in the school curriculum.

    Academic text (1992)
  • You lost a fifth of your blood.

  • Now it's one out of five patients who are dying.

  • This plan would only undo a fifth of those cuts.

  • In total, this was about a fifth of what the Finnish government had asked for in 1925.

    Academic text (1999)
  • Between 1980 and 2000, Alaska accounted for an average of one-fifth of U.S. oil production.

    Academic text (2012)
  • One fifth of Afghanistan now lives in Pakistan's North-West Frontier Province.

  • Financial impediments were most frequent, occurring in more than one-fifth of the cases.

    Academic text (1990)
  • One justification for spending nearly one-fifth of the United States GDP on healthcare is that high-quality health outcomes will result.

    Academic text (2017)

Synonyms

twenty percent
vsfifth
20 1.0

An amount equal to twenty out of every one hundred

expresses the same proportion but as one part of five rather than per hundred
one-fifth
vsfifth
17 1.1

One of five equal parts of a whole

is the same meaning but expressed as a simple ordinal word
quintile
vsfifth
  • Specialized
6 7.4

One of five equal groups used to compare people or numbers

is the general fractional idea applied beyond statistical groupings
fifth part
vsfifth
1.2

One of five equal parts of a whole

is the broader, more common label for that equal division

Idioms

19 8.3

To refuse to answer questions in court to avoid saying something that could make you look guilty

Refuse to answer questions in court or by police to avoid saying you did something wrong

Compounds

41 3.3

A famous street in Manhattan known for expensive shops and landmarks

17 1.1

One of five equal parts of a whole

5 1.0

The position that comes after number twenty-four in a list

fifth wheel
  • Offensive
2 7.0

A person who feels left out when others are a couple

2 9.8

A group of people inside a country or organization who secretly help an enemy

A person who secretly helps an enemy inside their country

fifth wheel
  • Archaic
1 9.1

A metal part on a wagon that lets the front axle turn for steering

1 1.0

The position after sixty-four in a list

A US legal right that protects people from forced testimony, being tried twice, and unfair legal process

Euclid's fifth axiom
  • Specialized
9.9

A rule that says there is exactly one line through a point that is parallel to a given line

An extra wheel and tire kept in a car for emergencies

fifth base
  • Offensive
9.9

A slang phrase for having sex as the final step in dating

fifth cranial nerve
  • Specialized
7.4

A main nerve in the face that carries feeling and controls chewing muscles

A Crusade from 1218 to 1221 where European Christians tried to take Jerusalem by attacking Egypt but failed

A council of Catholic leaders in Rome 1512–1517 that made church reforms and planned a crusade against the Turks

One of five equal parts of a whole

It comes after one hundred and thirty-four in order

The position number 125 in a list, order, or series

The position number 105 in a list

A person or thing in position one hundred and fifty-five in a list

The position number one hundred and forty-five in a list

The position number 175 in a series

A position that comes after one hundred sixty-four others in a sequence

How Much

whole
484 1.0
half
1.0
third
605 1.0
to quarter
5 2.1
fifth
30 1.0
tenth
58 1.0

Surface Forms

fifth singular
fifths plural

Morphology

fifth = five (transparent) = five + th

The fractional meaning 'one part out of five' is a direct semantic extension of the numeral plus '-th'.

Etymology

Fifth for a part comes from five + -th, meaning 'one of five', so a 'fifth' is one equal part when a whole is divided into five parts.