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known (EN)
adjective, noun

This word can also be a form of:
know (verb)

adjective “known”

base form known, non-gradable
  1. recognized as a certain kind or well-known
    The known artist's paintings were displayed in galleries all over the world.

noun “known”

singular known, plural knowns
  1. information or circumstances that are recognized or familiar
    In the game of chess, the opening moves are knowns that many players study.
  2. in algebra, a quantity whose value is established
    In the equation, x is the unknown and must be solved for, while y is the known.