-у/-ю (партитивный родительный)

Partitive Genitive Singular Variant in -у or -ю

Level 6Sounds Like partitivnyj roditelʹnyj na -u/-û

The Partitive Genitive (or 'Second Genitive') is a variant ending for certain masculine nouns. Instead of the standard -а/-я, it uses -у/-ю to emphasize 'some' or 'a part' of something (e.g., чаю instead of чая).

How It Works

The Partitive Genitive (often referred to in academic tables as the Second Genitive) is a morphological nuance in Russian that adds a specific 'flavor' to the language. While the standard genitive case usually ends in -а/-я for masculine nouns, the Second Genitive uses -у/-ю. It has two distinct functions: expressing a part or quantity (Partitive) and forming set idiomatic phrases.

1. The Partitive Function (Quantities and Portions):

  • Mass Nouns & Collectives: Used with substances like чай (tea), сахар (sugar), мёд (honey), песок (sand), and the highly frequent collective noun народ (people), as in много народу (a lot of people).
  • Verbs of Consumption/Portioning: It often follows perfective verbs like выпить (drink), съесть (eat), or купить (buy) to indicate taking an indefinite portion of a whole (e.g., выпить чаю = to drink some tea). Note: If you are referring to a specific, definite object, perfective verbs take the accusative case (e.g., Я выпил чай = I drank the specific tea). Imperfective verbs describing general actions also typically take the accusative (e.g., Я пью чай).
  • Abstract Nouns: Used with abstract concepts to indicate a degree or amount, such as страху (fear), шуму (noise), or смеху (laughter).
  • Diminutives: The partitive ending is highly productive and natural with diminutive forms of mass nouns, such as чайку (a little tea) or медку (a little honey).

2. The Idiomatic and Prepositional Function:

  • Fixed Idioms: The -у/-ю ending is preserved in certain set expressions that do not have a partitive meaning, such as с глазу на глаз (eye to eye/privately) or ни разу (not once). Note that while без спросу (without asking) is very common, без спроса is perfectly acceptable and often preferred in modern formal writing.
  • Specific Prepositions: It is often triggered by prepositions like из, от, and с in adverbial phrases, such as упустить из виду (to lose sight of) or крикнуть с испугу (to cry out in fright).
  • Negative Constructions: Frequently found in set negative phrases, such as нет износу (will never wear out) or нет отбою (no end of/constant stream).

3. Key Constraints:

  • Inanimate Masculine Nouns: This variant only exists for inanimate masculine singular nouns that have a zero ending in the nominative. Feminine nouns or masculine nouns ending in -а/-я always use the standard genitive.
  • Adjective Rule: If you add a descriptive adjective, the standard -а/-я ending is preferred. For example: стакан чаю (common) vs. стакан крепкого чая (standard).
  • Measure Words: Exact measure words (like килограмм or литр) strongly prefer the standard genitive -а/-я in neutral and literary contexts (e.g., килограмм сахара). However, container words (like стакан) and indefinite quantities (like много) naturally accept the partitive -у/-ю ending (e.g., стакан чаю, много сахару).
  • Register and Trends: For productive usage (mass nouns), it is mostly colloquial. In formal, academic, or written Russian, the standard genitive (-а/-я) is absolutely required (e.g., производство сахара, never производство сахару). In modern Russian, the standard genitive is a universal alternative for mass nouns even in colloquial speech.

4. Nuance:
Using the -у/-ю ending makes the speech sound more natural, domestic, and 'cozy'.

Examples (5)

  1. Хочешь чаю?

    Do you want some tea?

    Word by Word: Want tea?

    Using 'чаю' instead of 'чая' emphasizes that you are offering a portion (a cup) of tea.

  2. Положи мне в кашу побольше медку.

    Put a bit more honey in my porridge.

    Word by Word: Put to me in porridge more honey [diminutive].

    The diminutive 'медок' takes the -у ending here to sound friendly and informal while indicating a quantity.

  3. Принеси мне стакан чаю.

    Bring me a glass of tea.

    Word by Word: Bring to me glass [of] tea.

    Container words like 'стакан' naturally accept the partitive ending for mass nouns in everyday speech, unlike exact measure words (like 'литр') which prefer the standard genitive.

  4. Налей мне немного супу.

    Pour me a little soup.

    Word by Word: Pour to me a little soup.

    The perfective verb 'налей' (pour) triggers the partitive because it implies taking a portion of the whole pot of soup.

  5. Натерпелся я с ним страху.

    I went through quite a bit of fear with him.

    Word by Word: Endured I with him fear.

    This is an idiomatic use with an abstract noun, indicating a significant 'amount' of fear experienced.

Common Mistakes

  • Using the partitive ending for a definite, specific object.

    Я вижу чаю на столе.
    Я вижу чай на столе.

    You cannot use the partitive when simply identifying or seeing a specific object. It must be used when a quantity or portion is involved. In the incorrect example, the speaker is identifying the object, so the accusative case is required.

  • Applying the -у/-ю ending to masculine nouns that do not take this variant.

    Я купил много хлебу.
    Я купил много хлеба.

    The -у/-ю variant is strictly for a specific historical group of masculine mass nouns and fixed idioms. It cannot be applied to all masculine nouns. For example, 'хлеб' (bread) must use the standard genitive ending -а to express a quantity.

  • Using the standard -а/-я ending in fossilized idioms.

    Я не был там ни раза.
    Я не был там ни разу.

    While the standard genitive ending is often an alternative for mass nouns, it is a mistake to use it in fixed idioms like 'ни разу' (not once) or 'с глазу на глаз' (eye to eye). In these cases, the -у ending is mandatory.

How It Connects

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-у/-ю (партитивный родительный)Level 6Partitive Genitive Singular Variant in -у or -ю

Learn This First

To understand the partitive genitive variant, learners must first be familiar with masculine noun genders and the standard genitive case. Additionally, since this form is often used in place of a direct object to indicate 'some' of a substance, knowledge of the accusative case for direct objects is essential for comparison.