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The phonology of Bengali, like that of its neighbouring Eastern Indo-Aryan languages, is characterised by a wide variety of diphthongs and inherent back vowels (both /o/ and /ɔ/).
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Phonemically, Bengali features 29 consonants, 7 oral vowels (8 if non-native /ʌ/ is counted), and up to 7 nasalized vowels. In the tables below, the sounds are given in IPA.
| Labial | Dental, Alveolar |
Retroflex[g] | Palato- alveolar |
Velar | Glottal | |||
|---|---|---|---|---|---|---|---|---|
| Nasal | m | n[h] | ŋ | |||||
| Plosive/ Affricate |
voiceless | unaspirated | p | t | ʈ | tʃ[i] | k | |
| aspirated | pʰ[j] | tʰ | ʈʰ | tʃʰ[i] | kʰ | |||
| voiced | unaspirated | b | d | ɖ | dʒ[i] | ɡ | ||
| aspirated[k] | bʱ[l] | dʱ | ɖʱ | dʒʱ[i] | ɡʱ | |||
| Fricative | voiceless | s[m] | ʃ[n] | |||||
| voiced | (z)[o] | ɦ[p] | ||||||
| Approximant | l | (j)[q] | ||||||
| Rhotic | unaspirated | r[r] | ɽ[s] | |||||
| aspirated | (ɽʱ)[t] | |||||||
Although the standard form of Bengali is largely uniform across Bangladesh and India, there are a few sounds that vary in pronunciation (in addition to the myriad variations in non-standard dialects):
- /æ/ never occurs outside of the initial syllable in native words. The main exceptions are when prefixes added to words starting জ্ঞা /ggæ/ (pronounced [gæ] when no prefixes are added but [gːæ] after a prefix is added). An example would be the word বিজ্ঞান /big.gæn/ [bigːæn] "science", a combination of the prefix বি- /bi/ (denoting deliberation, distinction, order or opposition) to the word জ্ঞান /ggæn/ [gæn] "knowledge". Some may choose to pronounce /æ/ in this environment as /a/, giving rise to the pronunciations [gan] (homophonous with গান "song") & [bigːan]. Examples of non-syllable initial /æ/ in this environment are rarer when thr word doesn't start with জ্ঞা, but they do exist. (অন্যায় /ɔn.næe̯/ [ɔnːæe̯] "Injustice" from অ- /ɔ/ (denoting negation) & ন্যায় /nnæe̯/ "justice"). The vowel is usually pronounced as a near-open [æ][2][3] but may also be pronounced and transcribed in IPA as open-mid [ɛ],[1] depending on the speaker or variety.
- /ʌ/ is only found English loanwords countaining the vowel /ʌ/, and is merged by most speakers with /a/ & by some as /ɔ/.[4]
- Bengali is usually said to have 7 nasal vowels. However, whilst /æ̃~ɛ̃/ and /ɔ̃/ do not have minimal pairs between them and their oral counterparts, they are still phonetically distinct, which makes their phonemic status hard to define[5]
- True retroflex (murdhonno) consonants are not found in Bengali.[6] They are apical postalveolar in western dialects. In other dialects, they are fronted to apico-alveolar.
- /s/ is a phoneme for many speakers of Standard Bengali (e.g. সিরকা /sirka/ 'vinegar', অস্থির /ɔstʰir/ 'uneasy', ব্যস /bas/ or /bæs/ 'enough'). For most speakers, /s/ and /ʃ/ are phonemically distinct (আস্তে /aste/ 'softly' vs. আসতে /aʃte/ 'to come'). For some, especially in Rajshahi, there is no difference between স and শ, (বাস /bʌs/ 'bus' vs. বাঁশ /bas/ 'bamboo'); they have the same consonant sound. For some speakers, [s] can be analyzed as an allophone of either /ʃ/ or /tʃʰ/ ([ʃalam] for সালাম /salam/ 'greetings' or বিচ্ছিরি [bitʃːʰiri] for বিশ্রী /bisːri/ 'ugly'). Some loanwords that originally had /s/ are now pronounced with [tʃʰ] in Standard Bengali (পছন্দ pochondo [pɔtʃʰondo] 'like', compared to Persian pasand).
- /ʃ/ may be phonetically realised as either [ʃ] or [ɕ] depending on the variety and speaker.
- /z/: ⟨জ⟩ and ⟨য⟩ may represent a voiced affricate /dʒ/ in Standard Bengali words of native origin, but they can also represent /z/ in foreign words and names (জাকাত /zakat/ 'zakah charity', আজিজ /aziz/ 'Aziz'). Most foreign borrowings with /z/ sound are replaced with /dʒ/, as in নামাজ /namadʒ/ 'namaz' and ডিজাইন /ɖidʒain/ 'design'. However, a native s/z opposition has developed in Chittagonian Bengali. Additionally, some loanwords that originally had [z] are now pronounced with /dʒ/ in Standard Bengali (সবজি /ʃobdʒi/ 'vegetable', from Persian sabzi).
- The /r/ phoneme is pronounced either as a voiced alveolar flap [ɾ], voiced alveolar approximant [ɹ] or voiced alveolar trill [r]. Most speakers colloquially pronounce /r/ as a flap [ɾ], although the trill [r] may occur word-initially (but very rarely); with the flap [ɾ] occurring medially and finally. /r/ can also occur as an approximant [ɹ], especially in some eastern dialects and sometimes in conjuncts before consonants.[8][9]
- [ɽ] is an allophone of /ɖ/ that occurs outside of word initial positions & the clusters /ɖɖ/ /nɖ/ (realised phonetically as [ɖː] & [ɳɖ] respectively). Bengali dialects make alveolar /r/ and postalveolar /ɽ/ increasingly indistinct phonemically eastwards, and it is fully realized as alveolar in eastern dialects (including the Standard Bengali dialect spoken in Dhaka), where both may be phonetically realised as either [ɾ] or [ɹ]. Thus the pairs পড়ে /pɔɽe/ 'reads'/'falls' vs. পরে /pɔre/ 'wears'/'after', and করা /kɔra/ 'do' vs. কড়া [kɔɽa] 'strict' can be homophonous.
Consonant clusters
Native Bengali (তদ্ভব tôdbhôbo) words do not allow initial consonant clusters;[10] the maximum syllabic structure is CVC (i.e. one vowel flanked by a consonant on each side). Many speakers of Bengali restrict their phonology to this pattern, even when using Sanskrit or English borrowings, such as গেরাম geram (CV.CVC) for গ্রাম gram (CCVC) meaning 'village' or ইস্কুল iskul / ishkul (VC.CVC) for স্কুল skul (CCVC) 'school'.
Sanskrit (তৎসম tôtśômo) words borrowed into Bengali, however, possess a wide range of clusters, expanding the maximum syllable structure to CCCVC. Some of these clusters, such as the [mr] in মৃত্যু mrittü ('death') or the [sp] in স্পষ্ট spôshṭo ('clear'), have become extremely common, and can be considered permitted consonant clusters in Bengali. English and other foreign (বিদেশী bideshi) borrowings add even more cluster types into the Bengali inventory, further increasing the syllable capacity,[citation needed] as commonly-used loanwords such as ট্রেন ṭren ('train') and গ্লাস glash ('glass') are now included in leading Bengali dictionaries.
Final consonant clusters are rare in Bengali.[11] Most final consonant clusters were borrowed into Bengali from English, as in লিফ্ট lifṭ ('elevator') and ব্যাংক beņk ("bank'). However, final clusters do exist in some native Bengali words, although rarely in standard pronunciation. One example of a final cluster in a standard Bengali word would be গঞ্জ gônj, which is found in names of hundreds of cities and towns across Bengal, including নবাবগঞ্জ Nôbabgônj and মানিকগঞ্জ Manikgônj. Some nonstandard varieties of Bengali make use of final clusters quite often. For example, in some Purbo (eastern) dialects, final consonant clusters consisting of a nasal and its corresponding oral stop are common, as in চান্দ chand ('moon'). The Standard Bengali equivalent of chand would be চাঁদ chãd, with a nasalized vowel instead of the final cluster.
Diphthongs
| IPA | Transliteration | Example |
|---|---|---|
| /ii̯/ | ii | nii "I take" |
| /iu̯/ | iu | biubhôl "upset" |
| /ei̯/ | ei | dei "I give" |
| /eu̯/ | eu | ḍheu "wave" |
| /æe̯/ | êe | nêe "they (singular) takes" |
| /ai̯/ | ai | pai "I find" |
| /ae̯/ | ae | pae "they (singular) find" |
| /au̯/ | au | pau "sliced bread" |
| /ao̯/ | ao | pao "you find" |
| /ɔe̯/ | ôe | nôe "they (singular) are not" |
| /ɔo̯/ | ôo | nôo "you are not" |
| /oi̯/ | oi | noi "I am not" |
| /oo̯/ | oo | dhoo "you wash" |
| /ou̯/ | ou | nouka "boat" |
| /ui̯/ | ui | dhui "I wash" |
Magadhan languages such as Bengali are known for their wide variety of diphthongs, or combinations of vowels occurring within the same syllable.[12] Two of these, /oi̯/ and /ou̯/, are the only ones with representation in script, as ঐ and ঔ respectively. The semivowels /e̯ i̯ o̯ u̯/ may all form the glide part of a diphthong. The total number of diphthongs is not established, with bounds at 17 and 31. Several vowel combinations can be considered true monosyllabic diphthongs, made up of the main vowel (the nucleus) and the trailing vowel (the off-glide).[13][page needed] Almost all other vowel combinations are possible, but only across two adjacent syllables, such as the disyllabic vowel combination [u.a] in কুয়া kua ('well'). As many as 25 vowel combinations can be found, but some of the more recent combinations have not passed through the stage between two syllables and a diphthongal monosyllable.[14]
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Stress
In standard Bengali, stress is predominantly initial. Bengali words are virtually all trochaic; the primary stress falls on the initial syllable of the word, while secondary stress often falls on all odd-numbered syllables thereafter, giving strings such as সহযোগিতা sahayogitā [ˈʃɔhoˌdʒoɡiˌta] ('cooperation'). The first syllable carries the greatest stress, with the third carrying a somewhat weaker stress, and all following odd-numbered syllables carrying very weak stress. However, in words borrowed from Sanskrit, the root syllable has stress, out of harmony with the situation with native Bengali words.[15] Also, in a declarative sentence, the stress is generally lowest on the last word of the sentence.
Adding prefixes to a word typically shifts the stress to the left; for example, while the word সভ্য sabhya [ˈʃobbʱo] ('civilized') carries the primary stress on the first syllable, adding the negative prefix /ɔ-/ creates অসভ্য asabhya [ˈɔʃobbʱo] ('uncivilized'), where the primary stress is now on the newly added first syllable অ ô. Word-stress does not alter the meaning of a word and is always subsidiary to sentence-level stress.[15]
Intonation
For Bengali words, intonation or pitch of voice have minor significance, apart from a few cases such as distinguishing between identical vowels in a diphthong. However, in sentences intonation does play a significant role.[16] In a simple declarative sentence, most words and/or phrases in Bengali carry a rising tone,[17] with the exception of the last word in the sentence, which only carries a low tone. This intonational pattern creates a musical tone to the typical Bengali sentence, with low and high tones alternating until the final drop in pitch to mark the end of the sentence.
In sentences involving focused words and/or phrases, the rising tones only last until the focused word; all following words carry a low tone.[17] This intonation pattern extends to wh-questions, as wh-words are normally considered to be focused. In yes–no questions, the rising tones may be more exaggerated, and most importantly, the final syllable of the final word in the sentence takes a high falling tone instead of a flat low tone.[18]
Vowel length
Like most Magadhan languages, vowel length is not contrastive in Bengali; all else equal, there is no meaningful distinction between a "short vowel" and a "long vowel",[19] unlike the situation in most Indo-Aryan languages. However, when morpheme boundaries come into play, vowel length can sometimes distinguish otherwise homophonous words. This is because open monosyllables (i.e. words that are made up of only one syllable, with that syllable ending in the main vowel and not a consonant) can have somewhat longer vowels than other syllable types.[20] For example, the vowel in ca ('tea') can be somewhat longer than the first vowel in caṭa ('licking'), as ca is a word with only one syllable, and no final consonant. The suffix ṭa ('the') can be added to ca to form caṭa ('the tea'), and the long vowel is preserved, creating a minimal pair ([ˈtʃaʈa] vs. [ˈtʃaˑʈa]). Knowing this fact, some interesting cases of apparent vowel length distinction can be found. In general, Bengali vowels tend to stay away from extreme vowel articulation.[20]
Furthermore, using a form of reduplication called "echo reduplication", the long vowel in ca can be copied into the reduplicant ṭa, giving caṭa ('tea and all that comes with it'). Thus, in addition to caṭa ('the tea') with a longer first vowel and caṭa ('licking') with no long vowels, we have caṭa ('tea and all that comes with it') with two longer vowels.
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 | This section needs additional citations for verification. (February 2020) |
Affricates and fricatives
In the dialects prevalent in much of eastern and south-eastern Bangladesh (Barisal, Chittagong, Dhaka and Sylhet Divisions), and Tripura and Barak Valley of India, many of the stops and affricates heard in the western and (south) central dialects are pronounced as fricatives. Western palato-alveolar and alveolo-palatal affricates চ [tɕ~tʃ], ছ [tɕʰ~tʃʰ], জ [dʑ~dʒ], ঝ [dʑʱ~dʒʱ] correspond to eastern চ [ts~s], ছ [tsʰ~s], জ [dz~z], ঝ [dzʱ~z].[21] Note that few Perso-Arabic borrowings containing the phoneme [z] are realized as such in all dialects.
The aspirated velar stop খ [kʰ], the unvoiced aspirated labial stop ফ [pʰ~ɸ~f] and the voiced aspirated labial stop ভ [bʱ] of western-central Bengali dialects correspond to খ় [x~ʜ], ফ় [ɸ~f] and ভ় [b~β~v] in eastern Bengali. These pronunciations are more prevalent in the Sylheti variety of northeastern Bangladesh and south Assam, the variety spoken by most of the Bengali community in the United Kingdom. Note that phonemic transcriptions from left to right for eastern Bengali dialects indicate the realizations further eastwards.
Far eastern Bengali dialects share phonological features with Assamese dialects, including the debuccalization of শ [ʃ~ɕ] to হ [h] or খ় [x].[9]
Substrate and Tibeto-Burman influence
The influence of older substrate and Tibeto-Burman languages on the phonology is more observable in eastern Bengali dialects, and becomes increasingly prominent eastwards. In dialects of the Mymensingh, Sylhet, Chittagong Divisions of Bangladesh (and bordering areas of Dhaka and Barishal Divisions), and Tripura and Barak Valley of India, alveolar stops are realized in place of postalveolar stops ট [t̠], ঠ [t̠ʰ], ড [d̠], and ঢ [d̠ʱ], resembling the equivalent phonemes in Southeast Asian languages such as Thai and Lao.
In the phonology of far western Bengali, the distinction between the alveolar tap র [ɾ], and postalveolar taps ড় [ɽ] and ঢ় [ɽʱ~ɽ] is clear and distinct like Indian languages further west. However, the distinction is often less clear in western and central dialects (unless in careful or conservative speech), and fully lost in eastern dialects, where both tap sounds are realized as either the alveolar tap or the alveolar approximant [ɹ], similar to Assamese ৰ, due to older substrate and Tibeto-Burman influence.[9] Far eastern Bengali dialects tend not to distinguish aspirated voiced stops ঘ [ɡʱ], ঝ [dʑʱ] (often fricativized instead), ঢ [d̠ʱ], ধ [dʱ], and ভ [bʱ] from their unaspirated equivalents, with some dialects treating them as allophones of each other and other dialects replacing the former with the latter completely. Note that ঢ় is realized as [ɽ] but not as [ɽʱ] in all Bengali dialects (including the standard one) except for far western ones (in Jharkhand and western parts of West Bengal).
Some variants of the Bengali, particularly the Chittagonian, and Sylheti, have contrastive tone and so differences in pitch can distinguish words. There is also a distinction between ই and ঈ in many northern Bangladeshi Bengali dialects. ই represents the uncommon [ɪ], but ঈ the standard [i] used for both letters in most other dialects.
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