Accusative singular of the direct object

Until now every noun you have used has been the subject — the one doing something. Kafa je dobra. But as soon as a noun is the thing the verb acts on — what you eat, drink, buy, want — Serbian marks it. That marked shape is called the accusative, and the noun that carries it is the direct object.

The good news is how small the change is. Out of the three genders, only one of them actually changes anything.

Feminine nouns in -a: the ending becomes -u

A feminine noun ending in -a swaps that -a for -u when it is the object. That is the whole rule for feminine nouns in -a, and it has no exceptions.

So Kafa je tu (coffee is the subject), but Pijem kafu (coffee is what I drink).

Masculine and neuter: nothing happens

A masculine noun naming a thing — bread, cheese, juice, a sandwich — looks exactly the same as an object as it does as a subject. So does every neuter noun in -o or -e. You write them just as you learned them.

That is why this lesson is easier than it sounds: two thirds of the nouns you meet need no work at all, and the third that does needs one letter.

Where the object stands

The normal order is verb, then object: Jedem hleb. Ona kupuje vodu. Because the ending shows what the object is, Serbian can move the words around for emphasis — Vodu ne pijem means "Water I do not drink" — but keep to verb + object while the pattern is new.

Negation and questions do not disturb the object at all. It stays accusative: Ne jedem meso. Šta piješ? Da li imaš supu?

Masculine nouns for people and animals behave differently and are not in this lesson. Vidim brata, not Vidim brat. Keep to masculine nouns naming things — food, drink, objects — until the next lesson deals with living ones.

Do not let je fool you. After the verb biti there is no object at all: Ovo je supa, never Ovo je supu. Soup is not being acted on there — it is what the thing IS. The accusative only appears after verbs like jesti, piti, imati, kupovati, hteti, voleti.