The Genitive in Comparisons and Set Phrases

You have met the genitive in its big jobs — possession, partitives, after numbers, after prepositions. This page sweeps up the remaining uses: the genitive that follows certain adjectives (plný vody — full of water), the genitive after quantifying nouns (řada otázek — a number of questions), and a scattering of frozen adverbial genitives (jednoho dne — one day, za bílého dne — in broad daylight). These do not all share one tidy rule. The honest advice is to learn them as collocations — fixed pairings worth memorizing — while keeping one productive pattern firmly in mind: adjectives of fullness, emptiness, and capability take the genitive.

The productive one: plný + genitive ("full of")

This is the pattern worth treating as a rule, because it generalizes cleanly. A small family of adjectives describing how full, empty, or capable something is governs the genitive of whatever fills, lacks, or is mastered. English uses of here too — full of water, capable of anything — and Czech answers it with the bare genitive, no preposition.

Adjective
  • genitive
Meaning
plnýplný vodyfull of water
prázdnýprázdný slovempty of words / hollow
schopnýschopný čehokolicapable of anything
hoden / hodnýhoden obdivuworthy of admiration
prostýprostý starostífree of cares
znalýznalý věciknowledgeable of the matter

Sklenice byla plná vody až po okraj.

The glass was full of water right to the brim. (plný + genitive vody)

Po té hádce byl schopný čehokoli.

After that argument he was capable of anything. (schopný + genitive čehokoli)

Je to počin hodný obdivu.

It's an achievement worthy of admiration. (hoden/hodný + genitive obdivu). (formal)

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Lock in plný + genitive as a single unit, the way you would learn an English phrasal verb. "Full of X" is plný followed by X in the genitiveplný vody, plný lidí, plný energie — never a nominative. This is the one pattern on this page you can apply productively to new nouns.

Quantifying nouns: řada, spousta, většina, množství

Czech has a set of nouns that behave like quantity words — "a number of", "a load of", "the majority of", "a quantity of". Like the quantifiers mnoho and hodně, they put the thing they quantify into the genitive (singular for masses, plural for countables). They are extremely common in both speech and writing.

Quantifying noun
  • genitive
Meaning
řadařada otázeka number of questions
spoustaspousta prácea load of work
většinavětšina lidímost people
menšinamenšina studentůa minority of students
množstvímnožství vodya quantity of water
spousta / fůra (colloq.)fůra peněza ton of money

Na schůzce padla řada otázek.

A number of questions came up at the meeting. (řada + genitive plural otázek)

Mám teď spoustu práce, ozvu se večer.

I've got a load of work right now, I'll get in touch this evening. (spousta + genitive práce)

Většina lidí s tím souhlasí.

Most people agree with it. (většina + genitive plural lidí)

These quantifying nouns themselves decline normally — po řadě let ("after a number of years"), kvůli spoustě problémů ("because of a load of problems") — while the quantified noun stays glued in the genitive. For the broader pattern of quantity-plus-genitive, see the genitive after quantities and quantifiers with the genitive.

Frozen adverbial genitives

Czech preserves a number of adverbial genitives — old genitive phrases that now function as fixed time or manner expressions. They are not productive; you cannot coin new ones. But they are common enough that you must recognize them, and a few are everyday vocabulary.

Frozen genitiveLiteralMeans
jednoho dneof one dayone day / someday
toho rokuof that yearthat year
za bílého dnein white dayin broad daylight
každého ránaof every morningevery morning
příštího týdneof next weeknext week
jednoho krásného dneof one beautiful dayone fine day

Jednoho dne se vrátím a všechno ti vysvětlím.

One day I'll come back and explain everything to you. (frozen genitive jednoho dne)

Okradli ho za bílého dne přímo na náměstí.

They robbed him in broad daylight right in the square. (frozen genitive za bílého dne)

Toho roku napadlo nejvíc sněhu za celé desetiletí.

That year saw the most snow in the whole decade. (frozen genitive toho roku)

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These adverbial genitives are frozen — learn them whole. Jednoho dne means "someday" as a single chunk; you don't build it from a rule, and you can't swap in jednoho týdne to mean "one week" the same way. Treat them like idioms, because that is what they are.

A note on comparison

You may meet the genitive lurking in comparisons, but be careful: the standard way to say "bigger than X" in Czech is než + nominative (větší než dům), not a genitive. A bare genitive of comparison (větší domu) is archaic/literary and you should not use it. The genitive does, however, turn up legitimately in comparison-flavoured set phrases like není nad ("there's nothing better than") and after some superlatives expressing "of all" (nejlepší ze všech — best of all, with ze + genitive). For the než-versus-genitive question in full, see než vs. the genitive in comparison.

Je to nejlepší ze všech, co jsem viděl.

It's the best of all I've seen. ('of all' = ze všech, ze + genitive)

Nad dobrou kávou není.

There's nothing better than good coffee. (frozen 'není nad' + instrumental; contrast the genitive patterns)

Common Mistakes

❌ Sklenice byla plná voda.

Incorrect — 'plný' governs the genitive; 'water' must be vody, not the nominative voda.

✅ Sklenice byla plná vody.

The glass was full of water. (plný + genitive vody)

❌ Mám teď spoustu práci.

Wrong case — after 'spousta' the noun goes into the genitive: práce, not the accusative práci.

✅ Mám teď spoustu práce.

I've got a load of work right now. (spousta + genitive práce)

❌ Většina lidé s tím souhlasí.

Wrong — 'většina' takes the genitive plural lidí, not the nominative lidé.

✅ Většina lidí s tím souhlasí.

Most people agree with it. (většina + genitive lidí)

❌ Jeden den se vrátím.

Means 'I'll come back for one day' — for the idiom 'someday' you need the frozen genitive jednoho dne.

✅ Jednoho dne se vrátím.

One day I'll come back. (frozen adverbial genitive)

Key Takeaways

  • Adjectives of fullness/capability take the genitive: plný vody, schopný čehokoli, hoden obdivu — and plný + genitive is productive, so learn it as a rule.
  • Quantifying nouns put their noun in the genitive: řada otázek, spousta práce, většina lidí, množství vody.
  • Frozen adverbial genitives are fixed time/manner phrases — learn them whole: jednoho dne, za bílého dne, toho roku, každého rána.
  • For comparison, use než + nominative (větší než dům); the genitive of comparison is archaic. "Of all" is ze všech.

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