<P> Boston accents make a greater variety of distinctions between short and long vowels before medial (ɹ) than many other modern American accents do: hurry (ˈhʌɹi) and furry (ˈfɝɹi); and mirror (ˈmɪɹə) and nearer (ˈniəɹə), though some of these distinctions are somewhat endangered as people under 40 in neighboring New Hampshire and Maine have lost them . Boston shares these distinctions with both New York and Received Pronunciation, but the Midwest, for instance, has lost them entirely . </P> <P> The nuclei of the diphthongs / aɪ / and / aʊ / may be raised to something like (ɐ) before voiceless consonants: thus write has a higher vowel than ride and lout has a higher vowel than loud . This effect is known usually as (one of the two phenomena of) Canadian raising, though it is less extreme in New England than in most of Canada . Furthermore, some Boston accents have a tendency to raise the / aʊ / diphthong in both voiced and voiceless environments and some Boston accents may raise the / aɪ / diphthong in certain voiced environments . </P> <P> The nuclei of / oʊ / and / uː / are significantly less fronted than in many American accents . / uː / may be diphthongized to approximately (ʊu) or (ɵu). </P> <P> The more deeply urban varieties of the Boston accent may use the dental stops (t̪, d̪) to replace the normal English dental fricatives (θ, ð). </P>

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