The Accusative as Direct Object

If a verb does something to a thing — you read a book, see a house, drink coffee, have a dog — that thing is the direct object, and in Czech it goes into the accusative case. This is the 4. pád (the fourth case), and it answers the questions koho? (whom?) and co? (what?). After the nominative subject, the accusative is the case you will use most, because almost every transitive verb takes an accusative object.

The whole idea is simple: the doer of the action is in the nominative, and the target of the action is in the accusative. Čtu knihu means "I read a book" — I (implied subject, nominative) am doing the reading, and the book (accusative) is what gets read. The trick for English speakers is remembering that the object often changes its shape, even though in English it never does.

The basic pattern: verb + accusative

Take any transitive verb and put its object in the accusative. Here are four everyday verbs in action:

Look closely at the endings. Kniha became knihu; káva became kávu. But dům stayed dům. Why the difference? Because Czech accusative endings depend on the noun's gender and — for masculine nouns — on whether it is alive. That is the heart of this case.

Feminine objects change: -a → -u

The cleanest, most visible accusative ending is the feminine one. Feminine nouns ending in -a swap that -a for -u in the accusative singular. This is the first ending most learners truly feel, because the change is so audible.

Note that the demonstrative agrees too: ta žena (that woman, subject) becomes tu ženu (that woman, object). The adjective and the noun travel together into the accusative.

Inanimate masculine and neuter look unchanged

Here is the relief: for inanimate masculine nouns (things, not living beings) and for neuter nouns, the accusative singular looks exactly like the nominative. No change at all. Dům (house) is dům whether subject or object; město (town) is město either way.

So hrad (castle), telefon, and the neuter město don't budge. If your object is an inanimate masculine or a neuter noun, you can leave it exactly as you learned it in the dictionary — which is a small mercy in a language famous for its endings.

Animate masculine borrows the genitive

The big exception — and it is important enough to have its own page — is animate masculine nouns: men, boys, and animals. For these, the accusative does not match the nominative. Instead it borrows the form of the genitive, typically adding -a.

So Czech sorts masculine nouns into two camps: alive (object ends in -a, like psa, muže) versus not-alive (object unchanged, like hrad). This animacy split runs through the whole case system; the dedicated animacy page walks through it in full.

The ending marks the object, not word order

Because the accusative is built into the noun's shape, Czech word order is free in a way English is not. In English, "The dog sees the man" and "The man sees the dog" mean opposite things — only the order tells you who sees whom. In Czech, the endings carry that information, so you can put the object first for emphasis without confusion.

In Knihu čtu rád, the object knihu comes first, yet the -u ending leaves no doubt it is what gets read, not the reader. Fronting the object like this is a normal, idiomatic way to highlight it — something English can only mimic with stress or a cleft ("It's the book I like to read").

Common Mistakes

Key Takeaways

• The accusative is the
  4. pád
  , answering koho? / co? — the direct object that receives the action.
• Feminine -a nouns swap to -u: kniha → knihu, žena → ženu.
• Inanimate masculine and neuter nouns look exactly like the nominative: vidím hrad, vidím město.
• Animate masculine nouns borrow the genitive, usually adding -a: pes → psa, muž → muže (see the animacy page).
• The ending, not word order, marks the object — so the object can come first: Knihu čtu rád.

For the detail on feminine objects and their soft variants, see feminine accusative singular; for the alive-versus-not split, see animacy in the accusative.