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.