plural fifths
ˈfiths 
ˈfif(t)ths,
ˈfif(t)s
1
: one that is number five in a series
Payment is due on the fifth of the month.
see Table of Numbers
2
: one of five equal parts of something
spent a fifth of their income on rent
3
a
: the musical interval embracing five diatonic degrees
b
: a tone at this interval
specifically
: dominant sense 1
c
: the harmonic combination of two tones at this interval
4
: a unit of measure for liquor equal to one fifth of a U.S. gallon (0.757 liter)
5
the Fifth
: the Fifth Amendment of the U.S. Constitution
also
: the right accorded by the Fifth Amendment to refuse to testify against oneself see also plead the fifth, take the fifth
fifth
adjective or adverb
the fifth annual food festival
She finished fifth in the race.
fifthly
adverb
Fourthly, it takes a lot of concrete to make a nuclear power plant. Fifthly, there is no place to put the waste that is safe.
—
Victor Odlivak
Victor Odlivak
Examples of fifth in a Sentence
The bill is due on the fifth of each month.
She donated a fifth of her income to charity.
bought a fifth of whiskey
Recent Examples on the Web
The touchdown for Wilson marked his fifth of the season, which is also a career high.
—Ryan Gaydos, FOXNews.com, 21 Dec. 2025
More than one-fifth of working-age recipients of Supplemental Security Income qualified because of an intellectual disability, according to a 2017 report.
—Maureen Groppe, USA Today, 21 Dec. 2025
One of the Apple Watch’s biggest threats has no screen, weighs about a fifth of an ounce and charges a monthly subscription for most of its features.
—Lisa Eadicicco, CNN Money, 17 Dec. 2025
The Ministry of Education said in August that one-fifth of higher education programs nationwide have been revamped in the last two years — with a slew of majors cut or added — to channel more students into AI and integrated circuits fields.
—Evelyn Cheng, CNBC, 10 Dec. 2025
See All Example Sentences for fifth
Examples are automatically compiled from online sources to
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Ryan Gaydos, FOXNews.com, 21 Dec. 2025
More than one-fifth of working-age recipients of Supplemental Security Income qualified because of an intellectual disability, according to a 2017 report.
—Maureen Groppe, USA Today, 21 Dec. 2025
One of the Apple Watch’s biggest threats has no screen, weighs about a fifth of an ounce and charges a monthly subscription for most of its features.
—Lisa Eadicicco, CNN Money, 17 Dec. 2025
The Ministry of Education said in August that one-fifth of higher education programs nationwide have been revamped in the last two years — with a slew of majors cut or added — to channel more students into AI and integrated circuits fields.
—Evelyn Cheng, CNBC, 10 Dec. 2025
See All Example Sentences for fifth
Cite this Entry
“Fifth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fifth. Accessed 24 Dec. 2025.
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