Masculine Nouns: The "-a" vs. The Rest

• Adjective Agreement: baṛā laṛkā (बड़ा लड़का, big boy) becomes baṛe laṛke (बड़े लड़के, big boys). Here, both the noun laṛkā and the adjective baṛā inflect. The verb will also reflect this plurality: baṛā laṛkā ā rahā hai (बड़ा लड़का आ रहा है, a big boy is coming) vs. baṛe laṛke ā rahe hain (बड़े लड़के आ रहे हैं, big boys are coming).

• Adjective Agreement: An adjective ending in -ā (like acchā – अच्छा, good) will still change to -e to agree with a plural unmarked masculine noun. For example, acchā dost (अच्छा दोस्त, good friend) becomes acche dost (अच्छे दोस्त, good friends). Notice how dost remains unchanged, but acchā becomes acche to signal the plural. If the adjective does not end in -ā (e.g., sundar – सुन्दर, beautiful), it remains unchanged for both singular and plural masculine nouns: sundar ghar (सुन्दर घर, beautiful house) and sundar ghar (सुन्दर घर, beautiful houses).

• Verb Agreement: Verbs consistently reflect the number of the subject. If the subject is a plural unmarked masculine noun, the verb will take its masculine plural form. For example, dost khā rahā hai (दोस्त खा रहा है, the friend is eating) vs. dost khā rahe hain (दोस्त खा रहे हैं, the friends are eating). The noun dost is identical, but the auxiliary verb (hai vs. hain) and the participle (rahā vs. rahe) clearly indicate plurality.

• do kele (दो केले, two bananas): A very common construction, showing kelā becomes kele.
• sāre kamre (सारे कमरे, all the rooms): sārā (all) also changes to sāre to agree with the plural kamre.
• sūkhā pattā (सूखा पत्ता, dry leaf) → sūkhe patte (सूखे पत्ते, dry leaves): Demonstrates both noun and adjective inflection.
• merā beṭā (मेरा बेटा, my son) → mere bete (मेरे बेटे, my sons): The possessive adjective merā also inflects to mere.

• kai ghar (कई घर, many houses): ghar remains unchanged.
• kuchh din (कुछ दिन, some days): din remains unchanged.
• paanch dost (पांच दोस्त, five friends): dost remains unchanged.
• nīlā ākāsh (नीला आकाश, blue sky): Here, ākāsh (आकाश, sky) is unmarked masculine. If you were talking about multiple skies (though less common), it would still be nīle ākāsh with nīlā changing to nīle.
• acchā kām (अच्छा काम, good work) → acche kām (अच्छे काम, good works/tasks): kām (काम) is unmarked, but the adjective acchā changes to acche.

• do laptop (दो लैपटॉप, two laptops): laptop is an unmarked masculine loanword.
• tin ticket (तीन टिकट, three tickets): ticket (टिकट) is also an unmarked masculine loanword.
• pāsport banāne (पासपोर्ट बनाने, to make passports): Here pāsport (पासपोर्ट) is used in a plural sense, but the noun form is singular.

While there are no absolute rules without exceptions, several strong tendencies exist.

• Masculine Indicators: Nouns ending in -ā (आ) are almost always masculine (e.g., laṛkā, kamrā). Nouns referring to male beings are masculine (e.g., pitā, ādmī). Days of the week (e.g., somvār – सोमवार, Monday) and months (e.g., janvarī – जनवरी, January) are masculine. Tree names (e.g., ām – आम, mango tree) are generally masculine. Most body parts ending in consonants (e.g., sīr – सिर, head) are masculine. Many abstract nouns formed from verbs (e.g., kām – काम, work) are masculine. Foreign loanwords often default to masculine, especially if they don't have an obvious feminine ending.
• Feminine Indicators: Nouns ending in -ī (ई) are usually feminine (e.g., laṛkī – लड़की, girl; nadī – नदी, river). Nouns referring to female beings are feminine (e.g., mātā – माता, mother). Language names (e.g., hindī – हिंदी), river names, and body parts ending in -ī (e.g., unglī – उंगली, finger) are typically feminine. Consonant-ending feminine nouns are common, but often require memorization (e.g., kitāb – किताब, book).

These are genuine exceptions to the -ā to -e rule. They are historically older or carry a specific semantic weight (kinship, royalty) that makes them resistant to the regular inflectional pattern. For such words, their singular and plural forms in the direct case are identical. You would say do pitā for "two fathers," with plurality indicated by the numeral.

Almost always, yes. English loanwords typically integrate into the "unmarked masculine noun" category in Hindi because their original English endings (e.g., -t, -k, -n) do not correspond to the Hindi -ā ending. Thus, words like computer, manager, ticket, bank, message, photo will use the same form for both singular and direct plural in Hindi.

Context is key. You will primarily rely on:

1. 1Numerals: If there's a number (ek, do, tin, kai, kuchh) preceding the noun, it will clarify the count.
2. 2Adjective Agreement: If there's an adjective ending in -ā modifying the noun, it will change to -e for the plural (e.g., acchā dost vs. acche dost).
3. 3Verb Agreement: The verb in the sentence will always agree with the number of the subject (e.g., dost ā rahā hai vs. dost ā rahe hain).

Generally, no. A noun's gender is fixed. However, some nouns have both masculine and feminine forms (e.g., laṛkā and laṛkī). There are also cases where a noun might be treated differently regionally or by specific speakers, but for a given word, its grammatical gender is inherent and constant.