Accusative Singular of μολυβδίς

What would the accusative singular of μολυβδ-ίς , ίδος, ἡ, be? The nominative singular is used in Polybius 27.11. 6 to describe the way a dart was cast out of a sling like a lead sling bullet. Thanks!

Do you know the third declension for names ending in consonants?

My textbook’s discussion of third declension nouns gave the rule as dropping the omicron sigma ending from the genitive singular to get the root and then appending an alpha to get the accusative singular. The result looked and sounded a little funny, though, and I couldn’t pull it up on the Perseus Tufts parser, so I thought I might be dealing with an irregular form or something.

If you don’t form the form in the Perseus parser, you may want to try Lexigram.

But better just to learn the 3rd declension. Given genitive in –ίδος, it’s very easy to form the other cases—even if they’re not actually attested. There’s nothing irregular about any such nouns, which are numerous.

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