Word.ws English Dictionary

unknown unknowns

unknown unknowns is the plural of unknown unknown.

Meaning of unknown unknown

Noun

unknown unknown (plural unknown unknowns)

  1. An uncertainty of unknown magnitude, consequence, structure, and probability characteristics, possibly with completely unsuspected existence; something that we don't know that we don't know.
    • This means there are technical unknowns, unknown unknowns, and technical uncertainties in the contract.1970, United States Congress. Senate. Committee on the Judiciary. Subcommittee on Antitrust and Monopoly, Competition in Defense Procurement – 1969: Hearing, Ninety-first Congress, page 166
    Synonyms:
    unk-unk

Questions about unknown unknowns

What is unknown unknowns the plural of?
Unknown unknowns is the plural of unknown unknown.

Words near unknown unknowns in the dictionary

  1. unknown numbers
  2. unknown quantities
  3. unknown quantity
  4. Unknown Soldier
  5. unknown unknown
  6. unknown unknowns
  7. unknownly
  8. unknownness
  9. unknownnesses
  10. unknowns
  11. unknownst

Source and license

Adapted from Wiktionary: unknown unknowns (page history and authors); unknown unknown (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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