PBX operator, aboriginal, accented, all-absorbing, alveolar, amidships, apical, apico-alveolar, apico-dental, arch, articulated, assimilated, automatic exchange, average, axial, back, banal, banner, barytone, basal, basic, bedrock, bilabial, broad, cacuminal, capital, cardinal, center, centermost, central office, centralized, centric, centroidal, centrosymmetric, cerebral, champion, checked, chief, close, common, concentrated, consonant, consonantal, continuant, controlling, core, crowning, crucial, deep, dental, dissimilated, dominant, dorsal, elemental, elementary, embryonic, equatorial, equidistant, essential, first, flat, focal, foremost, front, fundamental, generative, genetic, geocentric, germinal, glide, glossal, glottal, great, guttural, halfway, hard, headmost, heavy, hegemonic, high, important, in embryo, in ovo, indispensable, indoor, inmost, inner, innermost, inside, interior, intermediary, intermediate, internal, intestine, intimate, intonated, intrinsic, inward, key, labial, labiodental, labiovelar, lateral, lax, leading, life-and-death, life-or-death, light, lingual, liquid, long distance, low, machine-switching office, magisterial, main, master, material, mean, medial, median, mediocre, mediterranean, medium, mesial, mezzo, mid, middle, middle-of-the-road, middlemost, middling, midland, midmost, midships, midway, moderate, monophthongal, muted, narrow, nasal, nasalized, normal, nuclear, occlusive, of vital importance, omphalic, open, operator, ordinary, original, outstanding, overriding, overruling, oxytone, palatal, palatalized, panel switching, paramount, pharyngeal, pharyngealized, phonemic, phonetic, phonic, pitch, pitched, pivotal, posttonic, predominant, preeminent, pregnant, preponderant, prevailing, primal, primary, prime, primeval, primitive, primordial, principal, pristine, protogenic, radical, ranking, retroflex, rounded, routine, rudimentary, ruling, salient, seminal, semivowel, signal, significant, soft, sonant, sovereign, standard, star, stellar, stopped, stressed, strong, substantive, supereminent, surd, switchboard operator, syllabic, telephone exchange, telephone office, telephone operator, telephonist, tense, thick, throaty, tonal, tonic, topflight, twangy, umbilical, unaccented, unrounded, unstressed, usual, velar, vital, vocalic, vocoid, voiced, voiceless, vowel, vowellike, weak, wide