Longman Dictionary of Contemporary English homepage

unknown

1 adjective, adverb
     
un‧known1 W2
1 not known about:
The murderer's identity remains unknown.
For some unknown reason, Mark quit his job and moved to Greece.
a voyage through unknown territory
An unknown number of people were killed.
2 not famous:
an unknown artist
3

unknown to somebody

without someone knowing:
Unknown to his wife, Ron had been having an affair.
4

be an unknown quantity

if someone or something is an unknown quantity, you do not know what their abilities are or how they are likely to behave
WORD FOCUS: famous WORD FOCUS: famous
similar words: well-known, celebrated, renowned, eminent, noted, legendary

famous for doing something bad: notorious, infamous

not famous: little-known, unknown, obscure

a famous person: celebrity, celeb informal, star


See also
famous

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