The nuqta (Hindi: नुक़्ता, Urdu: نقطہ, romanized: nuqtā; sometimes also spelled nukta), is a diacritic mark that was introduced in Devanagari and some other Indic scripts to represent sounds not present in the original scripts.[A][1] It takes the form of a dot placed below a character. This idea is inspired from the Arabic script; for example, there are some letters in Urdu that share the same basic shape but differ in the placement of dots(s) or nuqta(s) in the Perso-Arabic script: the letter ع ayn, with the addition of a nuqta on top, becomes the letter غ g͟hayn.[2]
Use in Devanagari
Perso-Arabic consonants
The term nuqtā (नुक़्ता) is itself an example of the use of the nuqta (making it autological.) Other examples include क़िला (Urdu: قلعہ), qilā, 'fortress'; and आग़ा ख़ान (Urdu: آغا خان), Āġā K͟hān, a combination of a Türko-Mongolic (āġā) and a (k͟hān) honorific.
The nuqta, and the phonological distinction it represents, is sometimes ignored in practice; e.g., क़िलाqilā being simply spelled as किलाkilā. In the text Dialect Accent Features for Establishing Speaker Identity, Manisha Kulshreshtha and Ramkumar Mathur write, "A few sounds, borrowed from the other languages like Persian and Arabic, are written with a dot (bindu or nuqtā). Many people who speak Hindi as a second language, especially those who come from rural backgrounds and do not speak conventional Hindi (also called Khaṛībōlī), or speak in one of its dialects, pronounce these sounds as their nearest equivalents." For example, these rural speakers will assimilate the sound ɣ (Devanagari: ग़; Nastaliq: غ) as ɡ (Devanagari: ग; Nastaliq: گ).[3]
With a renewed Hindi–Urdu language contact, many Urdu writers now publish their works in Devanagari editions. Since the Perso-Arabic orthography is preserved in Nastaʿlīq script Urdu orthography, these writers use the nuqta in Devanagari when transcribing these consonants.
Dravidian consonants
Devanagari also includes coverage for the Dravidian consonants ऴ, ḻa /ɻ/; ऱ, ṟa /r/ and ऩ, ṉa /n/. (Respectively, these letters modify ळ, ḷa /ɭ/; र, ra /ɾ/ and न, na /n̪/). An example is तमिऴ् /t̪amiɻ/ (Tamil: தமிழ்), tamiḻ.
Dardic consonants
For example, the letters च़ and छ़ are used in Devanagari to write the Kashmiri alveolar affricates ژ/t͡s/ and ژھ/t͡sʰ/ respectively.
Eastern Indo-Aryan letters
To represent the Eastern Nagari letter য় representing /e̯ɔ/, the consonant य़, ẏa is used in Devanagari.
In Maithili, there are four non-syllabic vowels: i̯, u̯, e̯, o̯ written in Devanagari as य़, व़, य़ॆ, व़ॊ. But colloquially, these are written without nuqta.
The Bengali-Assamese script has ড় ঢ় য়, which are variations of ড ঢ য; however, ব and র are completely different in nature.
Old Nepali Letters
In Old Nepali language texts, a nuqta-like diactric is often found on similar glyphs or glyphs that have undergone phonological shifts.[4] There are two use cases found for it:
The glyph व़ was used to represent the phoneme [w], while the glyph व was instead used to represent the phoneme [b].
The glyph य़ was used to represent the phoneme [j], while the glyph य was used to represent the phoneme [dz]. Many words that contained the phoneme [j] also shifted in pronunciation to [dz], following a common trend in Indo-Aryan languages. [5]
Similar diacritics
Sindhi's and Saraiki's implosives are accommodated in Devanagari with a line attached below—a diacritical bar: ॻ[ɠə], ॼ[ʄə], ॾ[ɗə], ॿ[ɓə].
In Thaana script of Maldives, one or many nuqtas are added to their native consonants to represent Perso-Arabic consonants, and each phoneme is encoded as a whole in the Unicode block (instead of a separate codepoint for the diacritic).
^Kulshreshtha, Manisha; Mathur, Ramkumar (24 March 2012). Dialect Accent Features for Establishing Speaker Identity: A Case Study. Springer Science & Business Media. p. 19. ISBN978-1-4614-1137-6. A few sounds, borrowed from the other languages like Persian and Arabic, are written with a dot (bindu or nukta) as shown in Table 2.2.
