The meaning of UNKNOWN is not known.

Unknown is a 2011 action thriller film directed by Jaume Collet-Serra and starring Liam Neeson, Diane Kruger, January Jones, Aidan Quinn, Bruno Ganz, and Frank Langella. [7]

Feb 18, 2011 · A man (Liam Neeson) is in a horrible accident, and when he recovers, no one knows who he is, including his wife, in "Unknown," a 2011 film starring Liam Neeson, January Jones, Diane …

UNKNOWN definition: not known; not within the range of one's knowledge, experience, or understanding; strange; unfamiliar. See examples of unknown used in a sentence.

UNKNOWN meaning: 1. not known or familiar: 2. what is not familiar or known: 3. a person, especially a performer…. Learn more.

1. not known; not within the range of knowledge, experience, or understanding; strange; unfamiliar. 2. not discovered, explored, identified, or ascertained. 3. not widely known; not famous; obscure. n. 4. a …

If you say that a particular problem or situation is unknown, you mean that it never occurs. Heart disease was virtually unknown at the turn of the century.

Definition of unknown adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Oct 16, 2025 · unknown (plural unknowns) (algebra) A variable (usually x, y or z) whose value is to be found. Any thing, place, or situation about which nothing is known; an unknown fact or piece of …

A person who is not well known, as to the general public. Cast an unknown in the starring role.