andha tva

 The standard Devanagari spelling is अन्धत्व.

Short answer: The correct Devanagari form of andha tva (“blindness”) is अन्धत्व, written as a single morphological unit in Sanskrit and in formal Hindi.

Why the spelling is अन्धत्व

• Devanagari assigns every consonant an inherent अ vowel unless modified by a vowel sign or a halant

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• The word andha is spelled अन्ध:
  • अ (a)
  • न् (n + halant)
  • ध (dha)
• The suffix -tva (“-ness, state of being”) is written त्व, a conjunct of त् + व.
• When combined, Sanskrit orthography writes the compound as a single word: अन्ध + त्व → अन्धत्व.
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How the script rules support this spelling

• Devanagari uses halant (्) to suppress the inherent vowel and form clusters

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  • न् + ध → न्ध
  • त् + व → त्व
• These clusters are standard and do not require special diacritics; the script’s phonetic structure naturally produces them

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Relation to transliteration systems

• ISO 15919 and IAST transliterate the word as andhatva, matching the consonant clusters seen in अन्धत्व

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• Wiktionary’s Hindi/Sanskrit transliteration system also maps ध = dha, त = ta, व = va, confirming the same structure

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Sanskrit vs. Hindi usage

• In Sanskrit, andhatva is a common abstract noun meaning “blindness,” always written अन्धत्व.
• In Hindi, the form is understood but not commonly used in everyday speech; however, the spelling rules are identical because Hindi uses the same Devanagari conventions

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Why it is not written as two words

• The suffix -त्व is a bound morpheme in Sanskrit and formal Hindi, so it attaches directly to the stem rather than forming a separate word.
• Devanagari orthography reflects this by writing the entire form continuously.

Summary

• Standard Devanagari spelling: अन्धत्व
• IAST/ISO transliteration: andhatva
• Meaning: “blindness,” “state of being blind”