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Definitions for Unknown

[1] not known; not within the range of one's knowledge, experience, or understanding; strange; unfamiliar.
[2] not discovered, explored, identified, or ascertained: the unknown parts of Antarctica.
[3] not widely known; not famous; obscure: an unknown writer.
[4] 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.
[5] 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.
[6] not known, understood, or recognized
[7] not established, identified, or discovered an unknown island
[8] not famous; undistinguished some unknown artist
[9] unknown quantity a person or thing whose action, effect, etc, is unknown or unpredictable
[10] an unknown person, quantity, or thing
[11] 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

Words related to Unknown

unexplored, exotic, unidentified, remote, undiscovered, unfamiliar, foreign, strange, anonymous, new, nameless, unnamed, uncharted, unexplained, unrecognized, dark, alien, far, secret, so-and-so

Words nearby Unknown

unknightly, unknit, unknot, unknowable, unknowing, unknown, unknown quantity, unknown soldier, unlace, unlade, unlaid

Origin of Unknown

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

Synonyms for Unknown

anonymous, exotic, foreign, nameless, new, remote, strange, uncharted, undiscovered, unexplained, unexplored, unfamiliar, unidentified, unnamed, unrecognized, X, alien, dark, far, secret, so-and-so, concealed, desolate, distant, far-off, faraway, hidden, humble, incog, incognito, little known, such-and-such, unapprehended, unascertained, uncelebrated, undistinguished, unheard-of, unnoted, unperceived, unrenowned, unrevealed, unsung, untold