unknown Meaning in the Cambridge English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of “unknown” in the English Dictionary

"unknown" in British English

See all translations

unknownadjective

uk   /ʌnˈnəʊn/  us   /-ˈnoʊn/
B1 not ​known or ​familiar: The ​exactnumber of ​peoplecarrying the ​virus is unknown. As ​recently as six ​months ago her ​name was ​almost unknown in this ​country. Unknown to me, she'd ​organized a ​party for my ​birthday.
More examples

unknownnoun

uk   /ʌnˈnəʊn/  us   /-ˈnoʊn/
C1 [S] what is not ​familiar or ​known: Racism is in some ​ways just a ​fear of the unknown. [C] a ​person, ​especially a ​performer or ​sportsplayer, who is not ​famous: For her ​latestfilm she ​deliberatelychose a ​cast of unknowns. [C] mainly US something that cannot be ​guessed at or ​calculated because so little is ​known about it: It's the ​big unknowns that make ​insurancecompaniesuneasy.
(Definition of unknown from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"unknown" in American English

See all translations

unknownadjective

 us   /ʌnˈnoʊn/
not ​known, or not ​known to many ​people: His ​whereabouts are still unknown.

unknownnoun [C]

 us   /ʌnˈnoʊn/
a ​person who is not ​known to many ​people: A ​year ago she was a ​virtual unknown on the figure-skating ​scene.
(Definition of unknown from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of unknown?
Add Cambridge dictionaries to your browser to your website
Word of the Day
faith school

a school that is financially supported by a particular religious group, usually for children from that religion

Word of the Day

Introducing a new author and a new weekly blog post!
Introducing a new author and a new weekly blog post!
by Cambridge Dictionaries Online,
August 27, 2015
The English language is constantly changing. You know that. But did you know that at Cambridge Dictionaries Online we keep track of the changes? We continually add new words and new meanings to our online dictionary for learners of English. Some of them are new to English entirely (neologisms), and some

Read More 

hyperpalatable adjective
hyperpalatable adjective
August 24, 2015
describes food with heightened levels of sugar and salt, intended to be extremely appealing In Brazil, where the prevalence of overweight and obese adults has doubled since 1980, crisps, biscuits, energy bars and sugary drinks formulated to be ‘hyper-palatable’ are much more widely eaten than previously.

Read More