English

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Etymology

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From un- +‎ tidal.

Adjective

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untidal (not comparable)

  1. Not tidal.
    • 1876, Charles James Gale, William Henry Willes, David Gibbons, A Treatise on the Law of Easements, page 229:
      [] held that the rights of riparian proprietors on tidal and untidal rivers were the same, []