A raised vowel is a

vowel A vowel is a speech sound pronounced without any stricture in the vocal tract, forming the nucleus of a syllable. Vowels are one of the two principal classes of speech sounds, the other being the consonant. Vowels vary in quality, in loudness a ...

sound in which the body of the tongue is raised upward and backward toward the dorsum (soft palate). The most raised cardinal vowels are ; also quite raised are , and . Raised vowels and

retracted vowel A retracted vowel is a vowel A vowel is a speech sound pronounced without any stricture in the vocal tract, forming the nucleus of a syllable. Vowels are one of the two principal classes of speech sounds, the other being the consonant. Vowels ...

s constitute the traditional but articulatorily-inaccurate category of

back vowel A back vowel is any in a class of vowel sound used in spoken languages. The defining characteristic of a back vowel is that the highest point of the tongue is positioned relatively back in the mouth without creating a constriction that would be c ...

s, but they also cover most of the

central vowel A central vowel, formerly also known as a mixed vowel, is any in a class of vowel sound used in some spoken languages. The defining characteristic of a central vowel is that the tongue is positioned approximately halfway between a front vowel ...

References

{{reflist *Scott Moisik, Ewa Czaykowska-Higgins, & John H. Esling (2012
"The Epilaryngeal Articulator: A New Conceptual Tool for Understanding Lingual-Laryngeal Contrasts"
Vowels