Unknown meaning in English

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Definition

unknown: unfamiliar, unidentified; strange, mysterious adjective
It is unknown how old Marcel is but we think he is between 90 and 110.

UK: I hate being an unknown actor - I want to be famous like Marilyn Monroe!
US: The reasons for her tragic suicide are still unknown.
  • "Date of birth: unknown."
  • "Betty was my guide to a sensual world previously unknown to me..."
  • "Nationality: unknown."
  • "Betty was my guide to a sensual world previously unknown to me."
  • "Next of kin: unknown."
  • "-Offer significant discount on future shipments to all retail partners as an act of good faith for recalled product (cost unknown but likely over $500,000)"
  • "This is the moment you've waited your whole life for: a voyage to the great unknown, a trek to the stars!"
  • "-Issue product vouchers to customers who have already purchased Eiffel Shower Gel (if necessary, cost unknown)"

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