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Word of the Day Tuesday, June 9, 2026

unknown

/ˌʌnˈnoʊ.ən/ adjective, noun · British & US
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What does unknown mean?

adjective, noun

Not known or identified; not recognized or acknowledged. A person or thing that is unknown is not familiar or well-known.

Example

"The unknown author of the book was a mystery to the publisher."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for unknown

Antonyms of unknown

Rhymes with unknown

Etymologically related