View synonyms for unknown

unknown

[ uhn-nohn ]

Phonetic (Standard)IPA

adjective

not known; not within the range of one's knowledge, experience, or understanding; strange; unfamiliar.
not discovered, explored, identified, or ascertained:
the unknown parts of Antarctica.
not widely known; not famous; obscure:
an unknown writer.

a thing, influence, area, factor, or person that is unknown:
the many unknowns in modern medicine; The director cast an unknown in the leading role.
Mathematics. a symbol representing an unknown quantity: in algebra, analysis, etc., frequently represented by a letter from the last part of the alphabet, as x, y, or z.

unknown

/ ʌnˈnəʊn /

not known, understood, or recognized
not established, identified, or discovered
an unknown island
not famous; undistinguished
some unknown artist
unknown quantity
a person or thing whose action, effect, etc, is unknown or unpredictable

an unknown person, quantity, or thing
maths a variable, or the quantity it represents, the value of which is to be discovered by solving an equation; a variable in a conditional equation
3y = 4x + 5 is an equation in two unknowns

Origin of unknown¹

First recorded in 1250–1300, unknown is from the Middle English word unknow(e)n. See un- ¹, known

While Faal and Njie are in U.S. custody, the whereabouts of the other survivors is unknown.

The police suspect that the other unaccounted for 643,000 bitcoins, were removed from customer accounts via an unknown party.

Former Gov. Jimmy Carter entered the 1976 Presidential campaign as a more or less total unknown.

Until recently, the hacker collective known as Lizard Squad was all but unknown.

I believe that my case is being interfered with by unknown elements inside Iran.

A native of Haarlem on Zandam, the date of her birth being unknown.

Idly his pen traced upon the paper in front of him a large X, the sign of the unknown quantity.

So how do you suppose Yung Pak's mother used to put him to sleep in this land where cradles were unknown?

The French Railroads are better in this respect, and the American cannot be worse, though the fault is not unknown there.

He believed Ramona was dead, buried in some unknown, unconsecrated spot, never to be found; yet he would not give up the search.

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