The Genitive After Quantity Words

In English you say a lot of money, a few books, little time — and the noun never changes its shape. Czech does something that feels strange at first: the quantity word governs the genitive, so the thing being counted bends into a genitive ending. A lot of money is mnoho peněz, with peníze turned into peněz. Once you accept that a quantity word behaves like a tiny preposition demanding the genitive, a whole family of everyday phrases falls into place. The question that finds this genitive is the same as everywhere — koho? čeho? (of whom? of what?).

The quantity words that trigger the genitive

These indefinite quantifiers all push the counted noun into the genitive:

The split that English never makes: singular vs plural genitive

Here is the part learners miss. The counted noun goes into the genitive, but which genitive — singular or plural — depends on whether the thing can be counted in pieces.

• Countable nouns (things you can count: books, people, days, crowns) take the genitive plural: mnoho knih, mnoho lidí, několik dní.
• Mass nouns (uncountable substances and abstractions: milk, water, time, sugar) take the genitive singular: mnoho mléka, málo času, trochu cukru.

Compare a count noun and a mass noun under the very same quantifier:

The logic mirrors English, even though the form doesn't: many books (plural, you count them) versus much sugar (you measure it, you don't count grains). Czech makes the same count-versus-mass decision, but it shows up as plural ending versus singular ending on the noun.

Notice that an adjective in front of the noun moves into the genitive too, agreeing with it: několik *nových obchodů, málo **volného času*. The whole phrase shifts together.

Numbers from five up behave the same way

This is not an isolated quirk of words like mnoho. Czech cardinal numbers from five upward govern the genitive plural in exactly the same way — pět korun (five crowns), deset lidí (ten people), sto let (a hundred years). An indefinite quantifier is really just a vague number, and it triggers the identical genitive. (The full story of why 2–3–4 behave differently from 5+ is on the numbers and the genitive page.)

So pět korun, mnoho korun and pár korun are built on one and the same principle: a quantity expression plus the genitive.

Agreement: the whole phrase counts as neuter singular

When a quantified phrase is the subject of the sentence, English speakers instinctively want a plural verb — many people came. Czech does the opposite: with the indeclinable quantifiers (mnoho, málo, několik, kolik, hodně, moc), the verb goes into the neuter singular, as if the quantity itself were the subject.

This feels backwards because lidí (people) is plural in meaning, yet the verb is přišlo, not přišli. The mental picture is "a quantity-of-people came," and a quantity is a neuter singular thing.

Common mistakes

The single biggest error is leaving the counted noun in the nominative — saying mnoho lidé the way English leaves people unchanged after many.

Key takeaways

• Indefinite quantity words (mnoho, málo, hodně, kolik, několik, trochu, dost, pár, moc) govern the genitive of the counted noun, the way a preposition would.
• Countable nouns take the genitive plural (mnoho knih, několik lidí); mass nouns take the genitive singular (mnoho mléka, málo času).
• Any adjective with the noun moves into the genitive too: málo volného času.
• Numbers 5 and up work identically (pět korun) — they are just precise quantifiers.
• A quantified subject takes a neuter singular verb (Přišlo mnoho lidí), except for the noun-quantifiers spousta / většina / řada, which take feminine singular.