Unknown

Definition

Unknown refers to something that is not known, familiar, or identified. It can describe a lack of knowledge or recognition about a person, place, fact, or object.

Parts of Speech

• Adjective
• Noun

Pronunciation

American English

• IPA Pronunciation: /ʌnˈnoʊn/
• Respelling: un-NOHN

British English

• IPA Pronunciation: /ʌnˈnəʊn/
• Respelling: un-NOHN

Etymology

The word "unknown" originates from the prefix "un-" (meaning "not") combined with "known," which derives from Old English "cnawan," meaning "to know." The term has been in use since the 14th century to describe things that are not recognized or familiar.

Derivatives

• Unknowable (adjective)
• Unknowing (adjective)
• Unknowingly (adverb)
• Known (adjective, antonym)
• Unknowns (noun, plural)

Synonyms

• Mysterious
• Unfamiliar
• Obscure

Antonyms

• Known
• Familiar
• Recognized

Usage

The word "unknown" is used to describe things that are not identified or understood, such as "The source of the problem remains unknown." It can also refer to people or entities with no established identity, as in "The artist was relatively unknown before the exhibition."

Related Terms

• Mystery: Something that is difficult or impossible to understand or explain.
• Ambiguity: The quality of being open to multiple interpretations.
• Ignorance: Lack of knowledge or awareness.

Detailed Definitions

Adjective

• Not known or familiar: Describes something or someone whose identity or nature is not recognized.
  • Example: "The exact location of the treasure is unknown."
• Unexplored or not understood: Refers to areas or concepts that have not been investigated or comprehended.
  • Example: "Space contains many unknown phenomena."

Noun

• Something or someone that is not known or identified: Refers to a person, object, or fact that remains undiscovered or unrecognized.
  • Example: "The case is filled with too many unknowns to solve."
• A variable in mathematics: Refers to a value in an equation that needs to be determined.
  • Example: "Solve for the unknown in the equation."