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BNC: 2087 COCA: 2825

unknown

1 of 2

adjective

un·​known ˌən-ˈnōn How to pronounce unknown (audio)
: not known or not well-known
also : having an unknown value
an unknown quantity

unknown

2 of 2

noun

1
: one that is not known or not well-known
especially : a person who is little known (as to the public)
2
: something that requires discovery, identification, or clarification: such as
a
: a symbol (such as x, y, or z) in a mathematical equation representing an unknown quantity
b
: a specimen (as of bacteria or mixed chemicals) required to be identified as an exercise in appropriate laboratory techniques

Synonyms

Example Sentences

Adjective a disease of unknown cause Much remains unknown about his early life. Her music was previously unknown outside of Asia. An unknown number of cases go unreported. The victim's attacker was unknown to her. For some unknown reason, my computer crashed. a book of unknown poems Noun explorers venturing off into the unknown A fear of the unknown kept her from changing jobs. The director cast an unknown in the lead role. We're facing too many unknowns. See More
Recent Examples on the Web
Adjective
PnB Rock was transported to the hospital and his current condition is unknown. Shirley Ju, Variety, 12 Sep. 2022 Excessive speed as a factor is unknown and impairment as a factor is being investigated, police have said. Fox19, The Enquirer, 12 Sep. 2022 But his status for the season’s start is unknown after having arthroscopic surgery on his left knee after tearing his meniscus. Khobi Price, Orlando Sentinel, 12 Sep. 2022 The victim, described as a Black male, was transported to the hospital and his current condition is unknown. Rania Aniftos, Billboard, 12 Sep. 2022 There were shell casings found in the area, but the number of shots fired was unknown at the time, Vanghele said. Mike Mavredakis, Hartford Courant, 12 Sep. 2022 Minerals Council South Africa, a mining industry lobbying group, said the cause of the dam collapse was unknown. Felix Njini, Fortune, 11 Sep. 2022 Holmes said the whereabouts of 13 students were still unknown and staff would keep checking on those students. Lynn Kutter, Arkansas Online, 10 Sep. 2022 But just how effective the BA.4-BA.5 boosters are is still unknown. WIRED, 10 Sep. 2022
Noun
The unknown is Nathanial Hackett, in his freshman year as a head coach. Nick Canepacolumnist, San Diego Union-Tribune, 3 Sep. 2022 In Hamlet’s case, this unknown is what happens after death. Teddy Mcdarrah, Forbes, 19 May 2021 Whitmore, who has risen from a relative unknown early on in his high school career to one of the best players in the country, was chosen among 380 boys. Tim Schwartz, baltimoresun.com, 25 Jan. 2022 During that span, Holmes went from an unknown to a Silicon Valley sensation who had amassed a $4.5 billion fortune on paper to a vilified failure. Michael Liedtke, chicagotribune.com, 4 Jan. 2022 During that span, Holmes went from an unknown to a Silicon Valley sensation who had amassed a $4.5 billion fortune on paper to a vilified failure. Michael Liedtke, ajc, 4 Jan. 2022 These pictures reveal our universe in mind-boggling detail, from stars being born in dusty nebulae to the oldest galaxies racing toward the unknown. Fionna M. D. Samuels, Scientific American, 18 Aug. 2022 PandaOmics is a platform that allows researchers a unique opportunity to both explore the unknown of OMICs data and interpret it in the context of all the scientific data generated by the scientific community. Alex Zhavoronkov, Forbes, 11 Aug. 2022 At first glance, the images and videos appear familiar while simultaneously possessing a refreshed look due to the placement of the ‘Ana Bag’ – causing viewers to be curious about the unknown. Greg Emmanuel, Essence, 8 Aug. 2022 See More

Word History

First Known Use

Adjective

14th century, in the meaning defined above

Noun

1597, in the meaning defined at sense 1

Time Traveler
The first known use of unknown was in the 14th century

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