Standard Hindi Phonology in IPA

Introduction

Standard Hindi (often identified with the register spoken in Delhi and taught as a second language) has a relatively small phoneme inventory compared with many other SouthAsian languages. The International Phonetic Alphabet (IPA) provides a concise way to represent these sounds for linguists, language learners, and speechtechnology developers. This page gives an overview of Hindis consonants, vowels, diphthongs, and a few phonological processes, each illustrated with IPA symbols.

Consonant Inventory

Hindi distinguishes 10 places of articulation and 4 major manners (stops, nasals, fricatives, approximants). The table below lists the phonemes in their basic form (voiceless, aspirated, etc.). All symbols are in IPA.

Key points:

• Hindi has a fourway contrast for stops: voiceless unaspirated (p, t, , c, k), voiceless aspirated (p, t, , c, k), voiced (b, d, , , ), and nasal (m, n, , , ).
• The retroflex series (, , , ) is a hallmark of the IndoAryan family.
• Fricatives are limited to /f, s, , z, , h/. The phoneme /z/ appears mainly in loanwords.
• The alveolar trill /r/ is realized as a tap [] in most contexts.

Vowel System

Standard Hindi distinguishes ten oral vowels and a set of nasalized counterparts that occur primarily in colloquial speech and loanwords.

Typical vowel quality:

• Close front unrounded: [i] as in bhee.
• Nearclose front: [] as in bil.
• Close back rounded: [u] as in p.
• Nearclose back: [] as in pur.
• Long mid front: [e] as in se.
• Long mid back: [o] as in ko.
• Mid central (schwa): [] appears in unstressed positions, e.g., the final in kth.

Diphthongs and Glide Sequences

Hindi diphthongs are usually analyzed as a vowel plus a glide. The most common are:

• [ai] as in bai (brother).
• [au] as in or (and).
• [ei] in loanwords such as sef (safe).

Glide sequences appear before or after vowels, e.g., [kj] in kja.

Phonological Processes

Voicing Assimilation

When a voiceless aspirated stop occurs at the end of a morpheme and the following morpheme begins with a voiced consonant, the aspiration may be lost and the stop may become voiced:
[p + ] [b]. Example: apka from underlying [ap + k].

Vowel Reduction

In rapid speech, the schwa // is frequently deleted, especially in wordfinal position:
[k] [k] ( k k).

Retroflexion of /t/ and /d/ before /r/

The alveolar stops become retroflex when they precede /r/:
[t + r] [r], [d + r] [r]. Example: triul surfaces as [riul].

Nasalization

Oral vowels become nasalized before nasal consonants that are later elided:
[bn] [b] in colloquial bd (dam).

Transcription Example

Below is a full IPA transcription of a simple Hindi sentence:

Hindi:

IPA:[m skul aj]

Breakdown:

• [m] (nasalized close-mid front vowel).
• [skul] (cluster /sk/ plus long /u/).
• [aj] (voiced velar stop + long /a/ + glide /j/ + schwa).

Further Reading

• Masica, Colin. The IndoAryan Languages. Cambridge University Press, 1991.
• Krishnamurti, Bhadriraju. Hindi: A Grammar of the Hindi Language. Routledge, 2003.
• Wheeler, R. C. Phonological patterns in Hindi. Journal of South Asian Languages, vol.12, 2010, pp.4568.
• International Phonetic Association. Handbook of the IPA. 4th ed., 2021.