Early Noldorin
medid
adjective. edible
madren
adjective. edible
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
An adjective appearing as ᴱN. madren “edible” in Early Noldorin Word-lists of the 1920s based on the verb ᴱN. mad- “eat” (PE13/163, 165). It seems this was a pure adjective, as opposed to indeclinable ᴱN. medid “edible” which was based on the inflected verb form medi- (PE13/163, 165). In the Gnomish Lexicon of the 1910s the adjective was instead G. madrin “edible, fit for food, wholesome” with variant form madriol (GL/56).
Neo-Sindarin: For purposes of Neo-Sindarin I would update this to ᴺS. madui “edible” using the later adjective suffix -ui, as in únodui “uncountable” (PE17/144).