Vocative case

Case used when addressing someone, found in Latin among other languages. In Latin the vocative case of a noun is the same as the nominative, except for masculine singular second declension nouns. An example would be the famous line from Shakespeare, "Et tu, Brute?", where "Brute" is the vocative case, whilst "Brutus" would be the nominative.

In English the vocative case is not marked, but English syntax performs a similar function; witness: "John, could you come here?" or "I don't think so, John", where "John" is neither subject nor object of the verb, but rather indicates the person to whom the statement is being addressed.

Compare nominative case, accusative case, ergative case, genitive case, dative case, ablative case.

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