THESAURUS
Vowel
accented, allophone, alveolar, apical, apico-alveolar, apico-dental, articulated, articulation, aspiration, assimilated, assimilation, back, barytone, bilabial, broad, cacuminal, central, cerebral, check, checked, close, consonant, consonantal, continuant, dental, diphthong, dissimilated, dissimilation, dorsal, epenthetic vowel, explosive, flat, front, glide, glossal, glottal, glottalization, guttural, hard, heavy, high, intonated, labial, labialization, labiodental, labiovelar, laryngeal, lateral, lax, light, lingual, liquid, low, manner of articulation, mid, modification, monophthong, monophthongal, morphophoneme, mute, muted, narrow, nasal, nasalized, occlusive, open, oxytone, palatal, palatalized, parasitic vowel, peak, pharyngeal, pharyngealization, pharyngealized, phone, phoneme, phonemic, phonetic, phonic, pitch, pitched, plosive, posttonic, prothetic vowel, retroflex, rounded, segmental phoneme, semivowel, soft, sonant, sonority, speech sound, stop, stopped, stressed, strong, surd, syllabic, syllabic nucleus, syllabic peak, syllable, tense, thick, throaty, tonal, tonic, transition sound, triphthong, twangy, unaccented, unrounded, unstressed, velar, vocable, vocal, vocalic, vocoid, voice, voiced, voiced sound, voiceless, voiceless sound, voicing, vowellike, weak, wide
ROGET THESAURUS
Vowel
Letter
N
letter, character, hieroglyphic, type, capitals, digraph, trigraph, ideogram, ideograph, majuscule, minuscule, majuscule, minuscule, alphabet, ABC, abecedary, christcross-row, consonant, vowel, diphthong, triphthong, mute, liquid, labial, dental, guttural, syllable, monosyllable, dissyllable, polysyllable, affix, suffix, spelling, orthograph, phonography, phonetic spelling, anagrammatism, metagrammatism, cipher, monogram, anagram, doubleacrostic, literal, alphabetical, abecedarian, syllabic, majuscular, minuscular, uncial.