Cardinal Numbers 5 and Up: the Genitive Plural Rule

This is the page where Czech numbers stop behaving like English ones. Up to four, counting works the way you expect — čtyři ženy přišly, "four women came", a plain plural subject with a plural verb (see Numbers 0–4). But from five upward, two surprising things happen at once: the counted noun jumps into the genitive plural, and the whole counted phrase starts acting like a singular neuter subject, dragging the verb into the singular. Master this one rule and you have crossed the hardest threshold in the Czech number system.

The rule in one line

From pět ("five") up — pět, šest, sedm, osm, devět, deset … sto, tisíc — the thing you are counting goes into the genitive plural:

How to actually build those genitive-plural forms — korun, lidí, stromů, let — is a whole skill of its own, covered on the next page, Genitive Plural Noun Forms. This page is about when and why you need it.

Why the genitive? The "a dozen of" logic

The genitive looks bizarre until you see where it comes from. Numbers from five up were, historically, nouns — quantity-words that governed a genitive, exactly the way English "a dozen", "a pair", "a lot" still do. English says "a dozen of eggs", "a lot of people": the of is a genitive. Old Czech pět worked the same way — literally "a fiveness of crowns". The preposition has long since vanished, but the genitive it required stayed frozen in place.

The verb goes singular neuter

This is the part that catches every English speaker. Because the number was historically a singular noun, the entire counted phrase counts as a single neuter thing for agreement. So the verb is 3rd-person singular, and in the past tense it takes the neuter -lo ending — even when you are obviously talking about many people.

In the present tense the same logic gives a 3rd-person singular verb:

Side by side: 2–4 versus 5+

The cleanest way to lock this in is to put the two systems against each other. Watch both the noun case and the verb flip as you cross from four to five.

Say the two members of each pair out loud back to back. The grammatical "click" between přišli (plural) and přišlo (singular neuter) is the whole lesson.

One important limit: only in the nominative and accusative

The genitive-plural-plus-singular-verb behaviour kicks in only when the whole counted phrase is the subject or the direct object — that is, in the nominative or accusative. The moment the phrase lands in another case (after a preposition like se, od, o), the number itself starts declining and the noun simply matches it. The "frozen genitive" melts.

That oblique-case behaviour — pěti, šesti, deseti and a matching noun — is its own topic; see Case Propagation Through Number Phrases. For now, just hold onto the boundary: genitive plural + singular verb is the subject/object pattern.

How this differs from English

English keeps a number completely inert: "five crowns", "twenty people", "a hundred years" — the noun is a plain plural and the verb agrees with it as a plural ("five people were here"). Czech does the opposite on both counts: it bends the noun into the genitive and shrinks the verb to a neuter singular. The instinct to say přišli pět lidí (plural verb, like English) is the single most reliable A2 error, precisely because it imports the English agreement wholesale. Train yourself to feel pět as "a batch of", and the singular verb stops feeling wrong.

Common Mistakes

Key Takeaways

• From pět up, the counted noun goes into the genitive plural: pět korun, deset lidí, sto let.
• The whole phrase counts as a singular neuter subject, so the verb is 3sg / past -lo: Přišlo pět lidí, Bylo tam deset aut.
• This contrasts sharply with 2–4, which take a nominative plural noun and a plural verb.
• It applies only in the nominative/accusative; in other cases the number and noun both inflect (see case propagation).
• The historical logic is "a dozen of X" — the vanished of is why the noun stays genitive.