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inesculent

inesculent, a.
  (ɪnˈɛskjʊlənt)
  [in-3.]
  Not esculent, not used for food; inedible.

1831 T. L. Peacock Crotchet Castle ii. (1887) 29, I care not a rush (or any other aquatic and inesculent vegetable) who or what sucks up either the water or the infection.

Oxford English Dictionary

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