The Unrounded vowel reference article from the English Wikipedia on 24-Jul-2004
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Unrounded vowel

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In phonetics, an unrounded vowel is a vowel which is produced without any rounding in the lips. Some examples of unrounded vowels include the English vowels found in the words "heed", "hid", "had" and "head".

There are two types of unrounded vowels: Spread and neutral.

See also

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