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BNC: 2087 COCA: 2825

unknown

1 unknown /ˌʌnˈnoʊn/ adjective
1 unknown
/ˌʌnˈnoʊn/
adjective
Learner's definition of UNKNOWN
: not known未知的;不了解的;未被认识的
: not well-known : not famous不出名的

unknown quantity

see quantity

unknown to

: without being known about by (someone)未被…知晓的
2 unknown /ˌʌnˈnoʊn/ noun
plural unknowns
2 unknown
/ˌʌnˈnoʊn/
noun
plural unknowns
Learner's definition of UNKNOWN
the unknown : a place, situation, or thing that you do not know about or understand不为人知的地方;不明的情况;未知的事物
[count] : a person who is not famous or well-known无名之辈
[count] : something that is not known or not yet discovered未知的某事物;尚未发现的某事物
[count] mathematics : a quantity that is not known and that is usually shown in equations as a letter (such as x, y, or z)未知数(如方程中的x、y或z)
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
BNC: 2087 COCA: 2825
unknown

noun¹

1place/thing that you know nothing about未知的處所或事物ADJECTIVE | VERB + UNKNOWN | PHRASES ADJECTIVEbig, great無可知曉What the weather will be like on the day is, as always, the great unknown.到時天氣會怎樣一向都是個未知數。VERB + UNKNOWNexplore, face, step into, venture into探索未知事物;面對未知事物;步入未知領域;鬥膽進入未知領域PHRASESa journey into the unknown, a leap into the unknown, a voyage into the unknown探索未知世界的旅程This action represents a leap into the unknown.這個行動是對未知事物的大膽探索。Motherhood was for her a journey into the unknown.做母親對她來說是開始一次未知之旅。fear of the unknown對未知事物的恐懼
unknown

noun²

2sb who is not well known不出名的人ADJECTIVEcomplete毫無名氣的人The championship was won by a complete unknown.一個名不見經傳的人贏得了冠軍。relative, virtual不太為人所知的人;幾乎無人知曉的人a cast of virtual unknowns由幾乎沒什麼名氣的人組成的演員陣容
unknown

adjective

VERBS | ADVERB | PREPOSITION | PHRASES VERBSbe未知remain仍然未知These sites remain largely unknown to the British public.這些場所基本上一直不為英國公眾所知。ADVERBcompletely, entirely, quite, totally, utterly (especially NAmE) 完全是未知的;一無所知His whereabouts were quite unknown during this period.這一時期他幾乎是下落不明。almost, practically, virtually幾乎無人知道;事實上不為人知This drug was practically unknown in Britain.這種藥在英國幾乎不為人知。largely, mostly基本上不為人知comparatively, relatively名氣比較小;相當不為人知a comparatively unknown actor不怎麼出名的演員She was then still relatively unknown.她那時候還不怎麼出名。as yet, currently, still還不為人知;目前不為人知;依然不為人知heretofore (formal, especially NAmE) , hitherto, previously迄今不為人知;以前不為人知
a period of democratic development previously unknown in their country以前在他們國家無人知曉的一段民主發展時期apparently表面上不為人知otherwise本來不出名He cites the works of two otherwise unknown authors.他引用了兩位本來不出名的作者的作品。PREPOSITIONto不為⋯所知Gold was totally unknown to their civilization.黃金完全不為他們的世界所知。PHRASESfor parts unknown, to parts unknown去往未知的地方She departed for parts unknown.她離開了,不知去了什麼地方。for reasons unknown, for unknown reasons不知何故

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