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Unedible (adjective)
Not edible.
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Inedible (adjective)
not edible; not appropriate, worthy, or safe to eat
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Inedible (noun)
Anything inedible; that which is not a foodstuff.
Wiktionary
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Inedible (adjective)
not fit or suitable for eating
“an inedible variety of mushroom”
Oxford Dictionary