Oblique Case in Hindi

In Brief

Hindi normally puts a noun in the oblique case before a postposition such as को, में, पर, से, or के लिए. The most visible beginner changes are लड़का → लड़के in the singular and लड़के → लड़कों in the plural; many singular nouns, including घर and लड़की, do not visibly change. Even when the form stays the same, its grammatical use is oblique.

Overview

A noun is a word for a person, place, thing, or idea: लड़का “boy,” किताब “book,” and शहर “city” are nouns. A case is a form or grammatical setting that shows how a noun relates to the rest of a sentence. Hindi contrasts the ordinary direct case with the oblique case, the form used when a postposition follows the noun.

A postposition does much of the work that an English preposition does, but it comes after its noun phrase. English says “in the house,” while Hindi says घर में, literally “house in.” Before that following word, Hindi grammar treats घर as oblique. There is no visible ending change in this example, but with लड़का, “to the boy” must be लड़के को, not लड़का को.

This is an A2 topic because it builds directly on basic postpositions. The essential task is not to memorize a new form for every phrase. Instead, learn to notice the structure noun + postposition, then choose the noun’s singular or plural oblique form. English speakers need special practice because English usually changes the preposition, not the noun: “boy,” “to the boy,” and “with the boy” all retain the same noun form.

How It Works

The basic pattern

Start with three questions:

1. Is a postposition following the noun or noun phrase?
2. Is the noun singular or plural?
3. Which noun pattern does it follow?

The basic structure is:

noun in the oblique case + postposition

Thus लड़का becomes लड़के को, while घर appears as घर में. Do not interpret “unchanged” as “not oblique”: घर has the same written direct and oblique singular forms.

Singular forms

The largest visible singular change affects masculine nouns ending in -ा. Here masculine is a grammatical gender category; it does not always refer to biological sex.

Noun type	Direct singular	Oblique singular	With a postposition
Masculine ending in -ा	लड़का “boy”	लड़के	लड़के को “to the boy”
Masculine ending in -ा	कमरा “room”	कमरे	कमरे में “in the room”
Other masculine ending	घर “house”	घर	घर से “from the house”
Feminine ending in -ी	लड़की “girl”	लड़की	लड़की के साथ “with the girl”
Other feminine ending	किताब “book”	किताब	किताब पर “on the book”

The high-value beginner rule is therefore:

• masculine singular -ा → -े before a postposition;
• most other singular nouns show no visible change.

Some words that end in -ा are not regular masculine -ा nouns. For example, feminine माता “mother” does not follow the लड़का pattern. Proper names such as सीता also normally remain unchanged. Learn a noun together with its gender rather than deciding only from its final letter.

Plural forms

Plural oblique forms are more visible and more general. A plural noun before a postposition normally ends in a nasalized -ों or -यों, depending on its direct plural form.

Noun type	Direct singular	Direct plural	Oblique plural	With a postposition
Masculine -ा	लड़का	लड़के	लड़कों	लड़कों को “to the boys”
Other masculine	घर	घर	घरों	घरों में “in the houses”
Feminine -ी	लड़की	लड़कियाँ	लड़कियों	लड़कियों के लिए “for the girls”
Feminine consonant-final	किताब	किताबें	किताबों	किताबों में “in the books”
Feminine -ा ending	माता	माताएँ	माताओं	माताओं के साथ “with the mothers”

A useful practical method is to begin with the direct plural:

• लड़के → लड़कों
• घर → घरों
• लड़कियाँ → लड़कियों
• किताबें → किताबों
• माताएँ → माताओं

The nasal mark matters: लड़को is not the standard spelling of लड़कों. In speech, endings may sound less distinct, but standard writing retains ों.

Common postpositions that require the oblique setting

Postposition	Common meaning	Example
को	to; object marker	बच्चे को
में	in; inside	कमरे में
पर	on; at	मेज़ पर
से	from; with; by means of	दोस्त से
तक	until; as far as	स्टेशन तक
का / के / की	of; ’s	लड़के की किताब
के लिए	for	बच्चों के लिए
के साथ	with	दोस्तों के साथ
के बारे में	about	शहर के बारे में
के पास	near; in someone’s possession	रीना के पास

With का, के, की, two kinds of grammar operate at once. The owner comes before the postposition and is oblique when its form can change, while का/के/की agrees with the thing owned:

• लड़के का घर — the boy’s house
• लड़के की किताब — the boy’s book
• लड़के के दोस्त — the boy’s friends

The ending on लड़के is caused by the following possessive postposition. The choice among का, की, के depends on घर, किताब, दोस्त, not on the gender of the owner.

Adjectives inside the noun phrase

A changeable adjective ending in -ा also adjusts before an oblique masculine noun. An adjective is a describing word, such as “good” or “new.”

• अच्छा लड़का — a good boy (direct singular)
• अच्छे लड़के को — to the good boy (oblique singular)
• अच्छे लड़कों को — to the good boys (oblique plural)

Adjectives that do not decline, such as सुंदर “beautiful,” stay the same: सुंदर कमरे में. The noun still takes its required form.

Examples in Context

Hindi	English	Note
मैंने लड़के को पानी दिया।	I gave water to the boy.	लड़का → लड़के before को
बच्चे कमरे में खेल रहे हैं।	The children are playing in the room.	कमरा → कमरे before में
वह पुराने घर में रहती है।	She lives in the old house.	घर is visibly unchanged; पुराने shows oblique agreement
हम दिल्ली से आए हैं।	We have come from Delhi.	The proper name दिल्ली stays unchanged
शिक्षक ने लड़कों से बात की।	The teacher spoke with the boys.	लड़के → लड़कों before से
ये किताबें बच्चों के लिए हैं।	These books are for the children.	बच्चे → बच्चों before के लिए
मैं अपनी बहन के साथ बाज़ार गई।	I went to the market with my sister.	Feminine singular बहन is visibly unchanged
मेज़ पर दो कप रखे हैं।	Two cups are placed on the table.	मेज़ is oblique but has no visible singular change
लड़कियों ने प्रतियोगिता जीती।	The girls won the competition.	लड़कियाँ → लड़कियों before ने
हम नए संग्रहालय तक पैदल गए।	We walked as far as the new museum.	संग्रहालय remains visibly unchanged
इस शहर के बारे में बहुत कुछ लिखा गया है।	A great deal has been written about this city.	शहर is followed by compound के बारे में
मेरे दोस्त के पास एक अतिरिक्त टिकट है।	My friend has an extra ticket.	Possession is expressed with के पास
उन कमरों की खिड़कियाँ बड़ी हैं।	The windows of those rooms are large.	कमरा → कमरों; की agrees with खिड़कियाँ
माँ ने छोटी लड़की के लिए खाना बनाया।	Mother made food for the little girl.	लड़की remains unchanged in the singular

Common Mistakes

Keeping masculine -ा in the singular

• Wrong: मैं लड़का को जानता हूँ।
• Right: मैं लड़के को जानता हूँ।
• Why: Singular masculine लड़का changes to लड़के before को.

Using the direct plural before a postposition

• Wrong: बच्चे के लिए मिठाई है। when several children are meant
• Right: बच्चों के लिए मिठाई है।
• Why: The direct plural बच्चे becomes oblique plural बच्चों. The wrong version can instead be understood as “for the child,” because बच्चे is also the oblique singular of बच्चा.

Changing every singular noun

• Wrong: लड़कीे के साथ or घरे में
• Right: लड़की के साथ, घर में
• Why: Feminine -ी nouns and many consonant-final nouns do not visibly change in the singular. Case is a grammatical role, not always a new spelling.

Forgetting nasalization in plural forms

• Wrong: दोस्तो के साथ
• Right: दोस्तों के साथ
• Why: The standard plural oblique ending is -ों. The nasal sign distinguishes the form in writing and pronunciation.

Making का/की/के agree with the owner

• Wrong: लड़की की भाई for “the girl’s brother”
• Right: लड़की का भाई
• Why: लड़की is the owner, but का agrees with masculine singular भाई, the thing or person possessed.

Changing only the noun, not its adjective

• Wrong: अच्छा लड़के को बुलाओ।
• Right: अच्छे लड़के को बुलाओ।
• Why: A changeable -ा adjective agrees with a masculine noun in the oblique case.

Usage Notes

The oblique case is not formal or literary; it is part of ordinary Hindi at every register. Everyday expressions such as घर में, काम पर, and दोस्तों के साथ use it constantly. Because many singular forms sound identical to their direct forms, learners often understand the rule before they become aware of how frequently they are applying it.

Hindi sometimes omits a noun that is obvious from context, leaving an oblique adjective or pronoun-like form. For example, छोटे को बुलाओ can mean “Call the younger one.” This is natural, but beginners should first master complete phrases such as छोटे लड़के को.

Forms in careful standard writing should preserve nasalized plural endings. In rapid conversation, speakers may reduce sounds, but imitating a reduced spelling such as लड़को is not recommended. Also remember that postpositions can express several English relations: से may mean “from,” “with,” or “by,” yet the noun form before it follows the same oblique pattern.

Beyond the Basics / Advanced Use

You do not need to master all of the following at A2, but these patterns explain forms you will soon encounter.

The postposition ने

In perfective transitive clauses—roughly, completed actions with a direct object—Hindi often marks the person who performed the action with ने. Nouns before ने use the same oblique patterns visible elsewhere:

• लड़के ने दरवाज़ा खोला। — The boy opened the door.
• लड़कियों ने मैच जीता। — The girls won the match.

Pronouns have special fused forms, such as मैंने “I + ने,” उसने “he/she + ने,” and उन्होंने “they/polite he or she + ने.” These are best learned as forms of the pronoun system rather than derived by the regular noun rules.

Pronouns have their own oblique stems

Personal and demonstrative pronouns do not simply take noun endings. Common combinations include मुझे “to me,” तुमसे “from/with you,” उसको “to him/her,” and उनके साथ “with them.” Some forms fuse with को: मुझको and the more frequent shorter मुझे both mean “to me.” The general idea—an oblique base before a postposition—still applies, but the forms must be learned separately.

Several postpositions can form a chain

Compound postpositions often contain के plus another word: के लिए, के सामने, के बाद, के कारण, के बारे में. The noun phrase before the whole unit is oblique:

• कार्यक्रम के बाद — after the program
• बड़े पेड़ के सामने — in front of the large tree
• उन समस्याओं के कारण — because of those problems

Notice that a whole noun phrase may show agreement: बड़ा पेड़ becomes बड़े पेड़ के सामने.

Direct and oblique forms can remove ambiguity—or create it

Hindi paradigms overlap. लड़के can be the direct plural “boys” or the oblique singular “boy,” so the following word and the verb help identify its role:

• लड़के आए। — The boys came. (लड़के is direct plural.)
• लड़के को बुलाओ। — Call the boy. (लड़के is oblique singular.)

This is normal, much like English “you” can be singular or plural. Read the entire phrase rather than translating one word in isolation.

Practice Tips

1. Learn nouns as a three-form set. For each useful noun, say its direct singular, direct plural, and oblique plural: लड़का–लड़के–लड़कों, लड़की–लड़कियाँ–लड़कियों, किताब–किताबें–किताबों. Add the oblique singular separately when it visibly differs.
2. Transform short phrases. Take a direct phrase such as अच्छा लड़का and add several postpositions: अच्छे लड़के को, अच्छे लड़के से, अच्छे लड़के के लिए. This trains both noun and adjective agreement.
3. Mark postpositions while reading. Underline को, में, पर, से, का/के/की, and compound forms. Then look one word or noun phrase to the left and explain why its form changed—or why it stayed visibly unchanged.

Related Concepts

• Prerequisite: Basic Postpositions — learn the everyday postpositions that trigger the oblique setting.
• Next step: More Postpositions — use oblique noun phrases with compounds such as के लिए, के साथ, and के बारे में.