ἀρκεθ-

Alas! Could not find the search term ἀρκεθ-.
Found the closest form ἀρκείου. Other nearby forms can be found in the wordwheel, or perhaps try searching again without accents.

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Parsed as:

masculine genitive singular (Luc)
✓ neuter genitive singular (Luc) of ἄρκειος