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
sahayogitā ('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. 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
sabhya ('civilized') carries the primary stress on the first syllable, adding the
negative prefix creates
asabhya ('uncivilized'), where the primary stress is now on the newly added first syllable
ô. Word-stress does not alter the meaning of a word and is always subsidiary to sentence-level stress. In a simple
declarative sentence, most words and/or phrases in Bengali carry a rising tone, 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.
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", 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. 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 ( vs. ). 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. 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. ==Regional phonological variations==