noumenon

/ˈnuːmənɑn/
noun
  1. A thing as it is in itself, independent of human perception or senses.
    • In Kantian philosophy, a noumenon is the object of pure thought, not of sensory experience.
    • We can never directly observe a noumenon; we only know phenomena.
    • The concept of a noumenon helps explain the limits of human knowledge.
Antonyms
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