Chandrabindu ँ and vowel nasalization

The chandrabindu ँ marks a nasalized vowel: air passes through the nose while the vowel itself continues. That is different from adding a separate n or m sound after the vowel. This small mark distinguishes words, appears in several very common verb and noun endings, and therefore belongs to both pronunciation and grammar—not merely decorative spelling.

This page focuses on spelling, reading, and grammatical distribution. Detailed phonetic conditioning and connected-speech realization belong on the vowel-nasalization pronunciation page.

What chandrabindu tells you to pronounce

The name chandrabindu means “moon-dot”: the crescent is the “moon,” and the dot sits above it. In the fixed learner romanization, nasalization is shown by a tilde on the vowel: माँ mā̃, हाँ hā̃, हूँ hū̃, कहाँ kahā̃. Hold the vowel normally while allowing some air through the nose; do not finish it with an English-style consonant n.

English nasalizes vowels predictably beside nasal consonants: the vowel in man is often somewhat nasal because n follows it. English speakers normally treat that coloring as automatic, not as a contrast. Hindi can make nasalization part of the word itself, and the script can write that contrast explicitly.

Nasalization can distinguish words

Because chandrabindu changes the vowel rather than adding a consonant, omitting it can produce another word. The clearest everyday contrast is सास sās “mother-in-law” versus साँस sā̃s “breath.” Likewise, standard spelling distinguishes हंस haṃs “swan” from हँस hãs, the imperative or verb stem “laugh.” Context often prevents confusion in speech, but careful writing preserves the distinction.

The spelling हँसो contains a nasalized a followed by s, whereas हंस contains anusvara before s. In careful pronunciation these have different structures: hã-so versus haṃs. This is exactly why the learner romanization uses a vowel tilde for chandrabindu but ṃ for anusvara outside the homorganic-stop environments covered on the anusvara page.

Chandrabindu with independent vowels and vowel signs

Chandrabindu follows the written vowel element. It can appear over an independent vowel, as in आँच ā̃c “flame/heat,” or over a consonant carrying a vowel sign, as in चाँदी cā̃dī “silver.” The mark belongs to the whole syllable nucleus, not to the consonant below it.

The visible position changes with the letter cluster, but the reading principle does not. In आँ, the chandrabindu is above the independent vowel आ. In चाँ, it appears above the horizontal headline after the long-ā sign. In हूँ, it combines with the ū sign. Learn the complete written unit instead of imagining the mark as an independent letter.

Why a dot sometimes represents a nasalized vowel

Modern Devanagari does not always display chandrabindu even when the pronunciation contains a nasalized vowel. Above-the-line vowel signs can leave little room for the crescent, so conventional spellings often use the simpler anusvara-shaped dot ं instead. Extremely common forms include मैं “I,” में “in,” नहीं “not,” and हैं “are.” This is an orthographic convention: the dot's printed shape does not require a following nasal consonant in these words.

That means the relationship between the two marks is not perfectly mechanical. With spacious vowel signs, standard spelling generally shows chandrabindu clearly: माँ, कहाँ, हूँ, जाऊँगा. In conventional forms such as मैं and नहीं, the spelling uses a dot. The fixed romanization is normally sign-transparent, but it makes one pronunciation-oriented lexical exception: मैं maĩ and its forms such as मैंने maĩne use a vowel tilde because the pronoun's nasalized vowel is fundamental for beginners. Other conventional dot spellings remain ṃ, including में meṃ, नहीं nahīṃ, and हैं haiṃ.

In actual speech, the final vowel of नहीं nahīṃ is nasalized; the romanized ṃ records the Devanagari dot under this guide's fixed convention. The same spelling-based decision applies to हैं haiṃ. Do not mistake this notation for an instruction to add a full final m sound.

Nasalization in grammar

Chandrabindu is especially important because it appears in productive endings. The first-person singular future and subjunctive commonly contain -ऊँ -ū̃: जाऊँगा jāū̃gā “I will go,” करूँगी karū̃gī “I will do,” and जाऊँ jāū̃ “may I go / I should go,” depending on the larger construction. The first-person singular present copula हूँ hū̃ also contains it. Omitting the mark makes the spelling incomplete and can obscure person marking.

Nasalization also occurs in common feminine plural endings. लड़की laṛkī becomes लड़कियाँ laṛkiyā̃ in the direct plural, and महिला mahilā becomes महिलाएँ mahilāẽ. These forms do not end in a pronounced consonant n; the final vowel is nasalized. By contrast, many feminine plurals such as किताबें kitābeṃ are conventionally written with anusvara and therefore follow that page's fixed romanization.

A short reading line

Read this once slowly, sustaining each nasalized vowel, and then at normal conversational speed:

The chandrabindu occurs four times: माँ mā̃, हँसकर hãskar, हाँ hā̃, and गाँव gā̃v. The dot in बोलीं bolīṃ is anusvara, so the fixed romanization keeps ṃ. Reading the two marks differently makes the spelling system much more predictable.

Unicode and typing

Chandrabindu is the combining character U+0901 DEVANAGARI SIGN CANDRABINDU. In correctly encoded text it follows its base letter and any vowel sign, even though software renders it above the syllable. It is not anusvara ं (U+0902), nukta ़ (U+093C), or a Latin tilde pasted over a vowel. Use a Devanagari keyboard's chandrabindu key or character picker and keep the text in NFC.

Some fonts compress the crescent or make it look almost like a dot, especially above crowded vowel signs. Confirm the underlying character rather than judging solely from one font. Search, sorting, pronunciation data, and spelling checks all depend on the correct code point.

Common Mistakes

1. Omitting a mark that changes the word

2. Writing the verb “laugh” like the noun “swan”

3. Dropping chandrabindu from a first-person future ending

4. Misspelling the first-person copula

5. Treating chandrabindu as optional in a lexical spelling

Key Takeaways

• ँ nasalizes the vowel; it does not add a separate n or m consonant.
• The fixed romanization writes explicit chandrabindu with a vowel tilde: माँ mā̃, हूँ hū̃.
• Nasalization can distinguish words, as in सास sās and साँस sā̃s.
• Conventional spellings sometimes use ं where the spoken vowel is nasalized, especially when upper vowel signs crowd the crescent.
• Chandrabindu is part of productive grammatical endings such as -ऊँ, -याँ, and -एँ; write it every time.